{
    "model": {
        "rank": 6498,
        "code": "thing-q229081",
        "model_id": "vr.tr.patella",
        "name": "patella",
        "purpose": "Enable an agent to recognise a patella, assess its documented condition and functional relationships, and identify appropriate next actions within the available evidence and authority.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q229081/",
        "tier": 2,
        "score": 60,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "right patella",
                "left patella"
            ],
            "aliasCount": 2,
            "merged": 2,
            "knownIn": 60,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q229081",
                "url": "https://www.wikidata.org/wiki/Q229081",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T14:54:53Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.00863566,
                        "turns": 1,
                        "seconds": 87.5,
                        "error": null
                    },
                    "codex": {
                        "seconds": 83.9,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c5b-e8f8-76c2-a712-953eb3a58caf\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: patella\nRegistry id: vr.tr.patella\nPlane / domain: PHY / PHY.LIV\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy m"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q229081",
                "registryId": "vr.tr.patella",
                "name": "patella",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.LIV"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q229081/",
            "model": {
                "registry_id": "vr.tr.patella",
                "name": "patella",
                "purpose": "Enable an agent to recognise a patella, assess its documented condition and functional relationships, and identify appropriate next actions within the available evidence and authority.",
                "definition": "The patella is the sesamoid bone of the human (and many tetrapod) knee that sits in the quadriceps tendon, articulates with the femoral trochlea, and increases the moment arm of the extensor mechanism.",
                "scope_statement": "This model owns the identity, anatomy, developmental configuration, tissue condition, articulation and extensor-mechanism participation of an individual patella, with observations tied to laterality, time and examination context.",
                "in_scope": [
                    "Patellar identity, laterality and anatomical location",
                    "Shape, dimensions, ossification and developmental variants",
                    "Integrity of patellar bone and its articular surface",
                    "Position, mobility and tracking relative to the femur",
                    "Patellar attachments and participation in knee extension",
                    "Patella-specific observations, interventions and follow-up"
                ],
                "out_of_scope": [
                    "Whole-knee anatomy and overall joint diagnosis",
                    "Independent models of the femur, tibia and fibula",
                    "Intrinsic muscle, tendon, ligament and retinacular disorders beyond their relationship to the patella",
                    "Whole-person disease, symptoms and rehabilitation planning",
                    "Independent identity and lifecycle of patellar implants",
                    "Population reference datasets and imaging-device calibration"
                ],
                "distinguishing_features": [
                    "Determine whether the structure occupies the patellar position anterior to the distal femur and participates in the knee extensor mechanism, rather than identifying it from an isolated bone fragment alone.",
                    "Distinguish the patella from the tibial tuberosity by establishing whether it is a separate structure or a projection continuous with the proximal tibia.",
                    "Distinguish it from other sesamoid bones using its anatomical relationships, including its femoral-facing articular surface and extensor attachments.",
                    "Determine whether an observed separate component represents a developmental patellar component, a fracture fragment or an unrelated ossified body using morphology, location and supporting history.",
                    "Distinguish native patellar tissue from a prosthetic component, documenting their relationship when both are present."
                ],
                "characteristics": [
                    {
                        "name": "Biological and specimen context",
                        "kind": "category",
                        "unit_or_values": "Species; living subject, cadaveric specimen or isolated specimen; developmental stage",
                        "why_it_matters": "Recognition criteria and interpretation of anatomy depend on the organism and developmental context."
                    },
                    {
                        "name": "Laterality",
                        "kind": "category",
                        "unit_or_values": "Left; right; indeterminate",
                        "why_it_matters": "Prevents observations or interventions being attributed to the opposite patella."
                    },
                    {
                        "name": "Native tissue and replacement status",
                        "kind": "state",
                        "unit_or_values": "Native; partly resected; resurfaced; absent after resection; uncertain",
                        "why_it_matters": "Determines which anatomical structures remain assessable and which observations concern an implant."
                    },
                    {
                        "name": "Patellar dimensions",
                        "kind": "measurement",
                        "unit_or_values": "Height, width and thickness in mm, with landmarks, tissue boundaries and method specified",
                        "why_it_matters": "Supports recognition, comparison and assessment of structural change."
                    },
                    {
                        "name": "Ossification and component configuration",
                        "kind": "state",
                        "unit_or_values": "Observed ossification centres, component count, locations and evidence of continuity or separation",
                        "why_it_matters": "Helps distinguish developmental configuration from acquired disruption."
                    },
                    {
                        "name": "Bone integrity",
                        "kind": "state",
                        "unit_or_values": "Intact; disrupted; healing; remodelled; indeterminate, with lesion location and evidence",
                        "why_it_matters": "Records structural conditions that may affect load transmission and allowable activity."
                    },
                    {
                        "name": "Articular surface condition",
                        "kind": "state",
                        "unit_or_values": "Location, extent and observed condition of cartilage and underlying bone; assessment method or named grading system",
                        "why_it_matters": "Captures the condition of the patella's joint-bearing surface without substituting a whole-knee diagnosis."
                    },
                    {
                        "name": "Patellar height and alignment",
                        "kind": "measurement",
                        "unit_or_values": "Named height ratio; translation in mm; tilt in degrees, with reference landmarks and knee position",
                        "why_it_matters": "Makes positional observations interpretable and comparable."
                    },
                    {
                        "name": "Tracking and stability",
                        "kind": "state",
                        "unit_or_values": "Observed motion path, displacement or instability event, with movement range, loading and examination context",
                        "why_it_matters": "Separates static position from behaviour during movement."
                    },
                    {
                        "name": "Extensor attachment relationships",
                        "kind": "relation",
                        "unit_or_values": "Attachment sites and observed continuity with quadriceps tendon, patellar tendon and stabilising soft tissues",
                        "why_it_matters": "Connects patellar condition to its contribution to knee extension and restraint."
                    }
                ],
                "affordances": [
                    "Identify and link a patella to its subject or specimen, side and supporting observations.",
                    "Annotate patellar landmarks, components, attachment sites and local abnormalities on images or examination records.",
                    "Compare patellar measurements and condition across time when methods and positioning are compatible.",
                    "Flag unresolved distinctions such as developmental separation versus fracture for qualified review.",
                    "Record patella-directed management decisions, procedures and restrictions with their authorisation and rationale.",
                    "Track structural and functional observations after injury or intervention."
                ]
            },
            "sources": [
                {
                    "id": "gray-anatomy-patella",
                    "title": "Gray's Anatomy: The Anatomical Basis of Clinical Practice - bones of the lower limb, patella",
                    "url": "https://www.elsevier.com/books/grays-anatomy/standring/978-0-7020-5230-9",
                    "what_it_supports": "Osteology: sesamoid in the quadriceps tendon, articular facets, odd facet, role in the extensor mechanism.",
                    "url_status": "live"
                },
                {
                    "id": "aaos-patellofemoral",
                    "title": "Patellofemoral disorders and the extensor mechanism (standard orthopaedic teaching; e.g. AAOS / major knee texts)",
                    "url": "",
                    "what_it_supports": "Clinical kinds (alta/baja, bipartite, instability, chondromalacia) and typical radiographic indices."
                },
                {
                    "id": "who-icd11-patella",
                    "title": "ICD-11 - injuries and diseases of the patella (codes under injuries to the knee and lower leg; osteochondropathies)",
                    "url": "https://icd.who.int/",
                    "what_it_supports": "Clinical classification of fracture, dislocation, and selected disorders involving the patella.",
                    "url_status": "live"
                },
                {
                    "id": "fip-patellidae",
                    "title": "WoRMS / taxonomic literature on Patellidae (genus Patella)",
                    "url": "https://www.marinespecies.org/",
                    "what_it_supports": "Homonym: the gastropod genus Patella as a separate living-thing sense sharing the name.",
                    "url_status": "live"
                }
            ],
            "structure": {
                "bundles": [
                    {
                        "id": "patellar-identity-and-configuration",
                        "name": "Patellar identity and configuration",
                        "description": "Establishes which patella is represented and what anatomical components constitute it.",
                        "rationale": "Side errors, immature anatomy and separate ossified components can undermine recognition before condition is assessed.",
                        "layers": [
                            {
                                "id": "anatomical-identification",
                                "name": "Anatomical identification",
                                "description": "Anchors the patella to a biological context and anatomical position.",
                                "findings": [
                                    {
                                        "id": "identity-and-laterality",
                                        "name": "Identity and laterality",
                                        "description": "Record the evidence identifying this structure as the patella of a particular subject or specimen and side.",
                                        "questions": [
                                            {
                                                "text": "Which anatomical relationships establish that this structure is a patella rather than another sesamoid, a tibial projection or a loose body?",
                                                "kind": "definition",
                                                "id": "identity-and-laterality-q01"
                                            },
                                            {
                                                "text": "What specimen labels, imaging markers or examination records establish its subject, species and laterality?",
                                                "kind": "provenance",
                                                "id": "identity-and-laterality-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "developmental-components",
                                "name": "Developmental components",
                                "description": "Describes ossification and any separation into components without presuming injury.",
                                "findings": [
                                    {
                                        "id": "ossification-and-separation",
                                        "name": "Ossification and separation",
                                        "description": "Record the observed developmental configuration and the evidence used to interpret separate components.",
                                        "questions": [
                                            {
                                                "text": "Which ossified and non-ossified components are visible, and how were their locations and boundaries established?",
                                                "kind": "measurement",
                                                "id": "ossification-and-separation-q01"
                                            },
                                            {
                                                "text": "What evidence distinguishes a developmental component from a fracture fragment or unrelated ossified body?",
                                                "kind": "boundary",
                                                "id": "ossification-and-separation-q02"
                                            },
                                            {
                                                "text": "Which earlier observations establish whether this configuration preceded the current concern?",
                                                "kind": "provenance",
                                                "id": "ossification-and-separation-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "patellar-form-and-tissue-integrity",
                        "name": "Patellar form and tissue integrity",
                        "description": "Describes patellar geometry and the condition of its bone and articular surface.",
                        "rationale": "Geometry, bone disruption and surface damage affect different aspects of patellar function and require distinct observations.",
                        "layers": [
                            {
                                "id": "bone-geometry-and-continuity",
                                "name": "Bone geometry and continuity",
                                "description": "Captures dimensions, contours and structural discontinuities.",
                                "findings": [
                                    {
                                        "id": "dimensions-and-bone-disruption",
                                        "name": "Dimensions and bone disruption",
                                        "description": "Record reproducible dimensions and localised evidence of fracture, loss of bone or remodelling.",
                                        "questions": [
                                            {
                                                "text": "What are the patella's measured height, width and thickness, and which landmarks and tissue boundaries define each measurement?",
                                                "kind": "measurement",
                                                "id": "dimensions-and-bone-disruption-q01"
                                            },
                                            {
                                                "text": "Where is bone continuity disrupted or altered, and what fragment displacement, separation or articular step is measurable?",
                                                "kind": "measurement",
                                                "id": "dimensions-and-bone-disruption-q02"
                                            },
                                            {
                                                "text": "Which observations support the recorded structural interpretation, and what remains unresolved by the examination method?",
                                                "kind": "provenance",
                                                "id": "dimensions-and-bone-disruption-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "articular-tissue-condition",
                                "name": "Articular tissue condition",
                                "description": "Localises changes in patellar cartilage and underlying bone.",
                                "findings": [
                                    {
                                        "id": "surface-and-subchondral-findings",
                                        "name": "Surface and subchondral findings",
                                        "description": "Record the location, extent and assessment basis of changes on the patellar side of the articulation.",
                                        "questions": [
                                            {
                                                "text": "Which patellar articular regions are affected, and what extent, depth or underlying bone change is directly observed?",
                                                "kind": "measurement",
                                                "id": "surface-and-subchondral-findings-q01"
                                            },
                                            {
                                                "text": "Which imaging, operative or specimen observations support the finding and any assigned grade?",
                                                "kind": "provenance",
                                                "id": "surface-and-subchondral-findings-q02"
                                            },
                                            {
                                                "text": "Which abnormalities belong to the opposing femoral surface and should be linked rather than attributed to the patella?",
                                                "kind": "boundary",
                                                "id": "surface-and-subchondral-findings-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "patellofemoral-position-and-motion",
                        "name": "Patellofemoral position and motion",
                        "description": "Records how the patella is positioned and moves relative to the femoral articulation.",
                        "rationale": "A static image cannot by itself characterise tracking or instability, and positional measurements depend on examination conditions.",
                        "layers": [
                            {
                                "id": "static-position",
                                "name": "Static position",
                                "description": "Describes patellar height, tilt and translation using explicit reference frames.",
                                "findings": [
                                    {
                                        "id": "height-tilt-and-translation",
                                        "name": "Height, tilt and translation",
                                        "description": "Record positional measurements together with the method and pose needed to interpret them.",
                                        "questions": [
                                            {
                                                "text": "Which named methods and reference landmarks were used to measure patellar height, tilt and translation?",
                                                "kind": "definition",
                                                "id": "height-tilt-and-translation-q01"
                                            },
                                            {
                                                "text": "What values were obtained, at what knee flexion, limb rotation, loading and muscle activation?",
                                                "kind": "measurement",
                                                "id": "height-tilt-and-translation-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "dynamic-tracking-and-stability",
                                "name": "Dynamic tracking and stability",
                                "description": "Captures observed patellar movement and episodes of abnormal displacement.",
                                "findings": [
                                    {
                                        "id": "motion-path-and-instability-events",
                                        "name": "Motion path and instability events",
                                        "description": "Record observed tracking separately from reported or documented instability episodes.",
                                        "questions": [
                                            {
                                                "text": "How does the patella move relative to the femoral trochlea through the observed range of knee motion?",
                                                "kind": "measurement",
                                                "id": "motion-path-and-instability-events-q01"
                                            },
                                            {
                                                "text": "For each suspected subluxation or dislocation, what establishes the direction, circumstances, timing and subsequent position?",
                                                "kind": "provenance",
                                                "id": "motion-path-and-instability-events-q02"
                                            },
                                            {
                                                "text": "Does the evidence establish an observed instability event, a reported history or an interpretation of static alignment?",
                                                "kind": "boundary",
                                                "id": "motion-path-and-instability-events-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "extensor-and-stabiliser-relationships",
                        "name": "Extensor and stabiliser relationships",
                        "description": "Connects patellar attachment integrity to extension and soft-tissue restraint.",
                        "rationale": "An intact patellar outline does not establish intact force transmission or adequate stabilisation.",
                        "layers": [
                            {
                                "id": "extensor-force-path",
                                "name": "Extensor force path",
                                "description": "Describes the patella's continuity with the structures transmitting knee-extension force.",
                                "findings": [
                                    {
                                        "id": "attachment-continuity-and-extension",
                                        "name": "Attachment continuity and extension",
                                        "description": "Record superior and inferior attachment relationships alongside relevant functional observations.",
                                        "questions": [
                                            {
                                                "text": "What evidence establishes continuity or disruption at the quadriceps-tendon and patellar-tendon attachments to this patella?",
                                                "kind": "provenance",
                                                "id": "attachment-continuity-and-extension-q01"
                                            },
                                            {
                                                "text": "What active-extension performance or extension lag was documented, and under which examination conditions?",
                                                "kind": "measurement",
                                                "id": "attachment-continuity-and-extension-q02"
                                            },
                                            {
                                                "text": "Which limitations can be attributed to patellar findings, and which require linked muscle, tendon, neurological or whole-knee assessment?",
                                                "kind": "boundary",
                                                "id": "attachment-continuity-and-extension-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "patellar-soft-tissue-restraints",
                                "name": "Patellar soft-tissue restraints",
                                "description": "Records patellar relationships with medial and lateral stabilising tissues.",
                                "findings": [
                                    {
                                        "id": "restraint-attachments-and-mobility",
                                        "name": "Restraint attachments and mobility",
                                        "description": "Record attachment findings and examined mobility without treating adjacent tissue pathology as intrinsic patellar disease.",
                                        "questions": [
                                            {
                                                "text": "Which stabilising tissue attachments show disruption, reconstruction or other documented alteration at the patella?",
                                                "kind": "provenance",
                                                "id": "restraint-attachments-and-mobility-q01"
                                            },
                                            {
                                                "text": "What patellar mobility or restraint was observed, in which direction and knee position, using which examination method?",
                                                "kind": "measurement",
                                                "id": "restraint-attachments-and-mobility-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "patellar-intervention-and-follow-up",
                        "name": "Patellar intervention and follow-up",
                        "description": "Records changes made to the patella and the evidence governing subsequent assessment or action.",
                        "rationale": "Fixation, resection and resurfacing alter the meaning of later measurements and require explicit links to procedures, devices and authorised management.",
                        "layers": [
                            {
                                "id": "altered-anatomy-and-devices",
                                "name": "Altered anatomy and devices",
                                "description": "Establishes the patellar tissue remaining after intervention and its relationship to devices.",
                                "findings": [
                                    {
                                        "id": "procedure-and-residual-patella",
                                        "name": "Procedure and residual patella",
                                        "description": "Record patella-directed procedures, residual native tissue and linked hardware or components.",
                                        "questions": [
                                            {
                                                "text": "What fixation, resection, resurfacing or attachment procedure was performed, when and according to which operative record?",
                                                "kind": "provenance",
                                                "id": "procedure-and-residual-patella-q01"
                                            },
                                            {
                                                "text": "Which native patellar regions remain, and how are implanted components or fixation devices related to them?",
                                                "kind": "boundary",
                                                "id": "procedure-and-residual-patella-q02"
                                            },
                                            {
                                                "text": "What residual dimensions, healing changes or device-interface findings are measurable on follow-up?",
                                                "kind": "measurement",
                                                "id": "procedure-and-residual-patella-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "decision-context-and-reassessment",
                                "name": "Decision context and reassessment",
                                "description": "Connects documented patellar findings to authorised actions and interpretable follow-up.",
                                "findings": [
                                    {
                                        "id": "management-basis-and-change",
                                        "name": "Management basis and change",
                                        "description": "Record the basis, authority and reassessment conditions for patella-specific management.",
                                        "questions": [
                                            {
                                                "text": "Which documented patellar findings support the current restrictions, monitoring or proposed intervention, and who authorised the decision?",
                                                "kind": "action",
                                                "id": "management-basis-and-change-q01"
                                            },
                                            {
                                                "text": "What change in patellar integrity, position, articular condition or extensor participation is the next assessment intended to evaluate?",
                                                "kind": "action",
                                                "id": "management-basis-and-change-q02"
                                            },
                                            {
                                                "text": "Are follow-up observations comparable in method, knee position and loading, and what uncertainty limits interpretation of change?",
                                                "kind": "measurement",
                                                "id": "management-basis-and-change-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "human adult patella (typically a single sesamoid with a triangular anterior face and a posterior articular surface divided by a vertical ridge into medial and lateral facets, plus a smaller odd facet on the extreme medial margin)",
                                            "bipartite or multipartite patella (failed or incomplete fusion of secondary ossification centres, most often a superolateral accessory fragment, distinguished from fracture by smooth sclerotic margins)",
                                            "patella alta / patella baja (positional variants: a high-riding or low-riding patella relative to the trochlea, commonly indexed by Insall-Salvati or Caton-Deschamps ratios)",
                                            "emarginate or hypoplastic patella (developmental under-formation, including the small high-riding patella of nail-patella syndrome)",
                                            "absent patella (congenital aplasia, isolated or syndromic)",
                                            "veterinary / comparative patellae (quadruped sesamoids with species-specific facet geometry; horses additionally have a medial patellar fibrocartilage used in the stay apparatus)",
                                            "genus Patella (true limpets of the family Patellidae - a different biological kind that shares only the Latin name)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "scheme": "Wikidata",
                                                "value_or_pattern": "Q185021 (anatomical patella); Q131595 (genus Patella)",
                                                "note": "Two distinct items; do not conflate the bone with the limpet genus."
                                            },
                                            {
                                                "scheme": "FMA",
                                                "value_or_pattern": "FMA:13386",
                                                "note": "Foundational Model of Anatomy identifier for the human patella."
                                            },
                                            {
                                                "scheme": "UBERON",
                                                "value_or_pattern": "UBERON:0002446",
                                                "note": "Uberon class 'patella'; comparative anatomy across vertebrates."
                                            },
                                            {
                                                "scheme": "TA98 / TA2",
                                                "value_or_pattern": "A02.5.05.001 (TA); TA2 2588",
                                                "note": "Terminologia Anatomica official Latin term Patella."
                                            },
                                            {
                                                "scheme": "SNOMED CT",
                                                "value_or_pattern": "64234005 |Patella|",
                                                "note": "Clinical finding/body-structure concept; child concepts for fracture, dislocation, bipartite patella, etc."
                                            },
                                            {
                                                "scheme": "ICD-11",
                                                "value_or_pattern": "NC93.* (injury of patella) and related knee codes; Q74.1 historically in ICD-10 for congenital malformation of the patella in nail-patella and allied syndromes",
                                                "note": "Use the current linearization; codes shift between revisions."
                                            },
                                            {
                                                "scheme": "ITIS / WoRMS (limpet sense only)",
                                                "value_or_pattern": "Genus Patella Linnaeus, 1758; WoRMS AphiaID 138322 (verify live)",
                                                "note": "Applies only if the registry entry is the gastropod, not the bone."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Terminologia Anatomica (TA98/TA2) - Federative International Programme for Anatomical Terminology (FIPAT/IFAA): official name Patella.",
                                            "ICD-11 - World Health Organization: morbidity/mortality coding of patellar injury and selected disorders.",
                                            "SNOMED CT - SNOMED International: clinical body-structure and disorder concepts.",
                                            "AO/OTA Fracture and Dislocation Classification - AO Foundation / Orthopaedic Trauma Association: patella fracture types (34-A/B/C and revisions).",
                                            "Medical Device Regulation (EU) 2017/745 and FDA 21 CFR device classification - govern patellar implants, buttons, and resurfacing components as knee-arthroplasty devices, not the native bone.",
                                            "CITES / fisheries and habitat law - apply to some Patella spp. (e.g. Patella ferruginea, strictly protected in the Mediterranean), not to the bone."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Primary landmark in clinical knee examination (patellar tracking, apprehension, grind/Clarke, Q-angle) and in surgical approaches to the knee (medial parapatellar arthrotomy, patellar eversion or non-eversion TKA).",
                                            "Sesamoid that transmits quadriceps force to the tibial tuberosity via the patellar tendon; measured on lateral and Merchant/skyline radiographs and on MRI for cartilage and retinacula.",
                                            "Common fracture site after direct blow or eccentric quadriceps contraction; treated with tension-band, plate, partial or total patellectomy, or non-operative extension-brace protocols.",
                                            "Resurfaced or left native in total knee arthroplasty; patellar component position and thickness are planned to restore offset and avoid overstuffing.",
                                            "In horses, the medial patellar ligament and fibrocartilage lock the stifle in the passive stay apparatus; upward fixation of the patella is a recognised veterinary condition.",
                                            "If the homonymous mollusc is in scope: intertidal grazing limpets (Patella vulgata and allies) used in ecology, fisheries, and as a Mediterranean conservation flagship (P. ferruginea)."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "quantity": "maximum height (proximal-distal)",
                                                "typical_range": "about 40-55 mm in adult humans (sex- and population-dependent; males larger on average)",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "maximum width (medial-lateral)",
                                                "typical_range": "about 40-50 mm in adult humans",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "maximum thickness (anterior-posterior)",
                                                "typical_range": "about 19-25 mm at the median ridge in adult humans; surgical 'rule of thumb' is to leave ≥12-15 mm residual bone after resurfacing",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Insall-Salvati ratio (patellar tendon length / patellar articular length)",
                                                "typical_range": "about 0.8-1.2; >1.2 often called patella alta, <0.8 patella baja",
                                                "unit": "dimensionless"
                                            },
                                            {
                                                "quantity": "Caton-Deschamps index",
                                                "typical_range": "about 0.6-1.3 depending on source cut-offs; used when the tibial tuberosity is distorted",
                                                "unit": "dimensionless"
                                            },
                                            {
                                                "quantity": "sulcus / congruence and lateral patellofemoral angles (Merchant view)",
                                                "typical_range": "sulcus angle typically ~138° ± a few degrees; lateral patellofemoral angle opens laterally in the stable knee",
                                                "unit": "degree"
                                            },
                                            {
                                                "quantity": "Q-angle",
                                                "typical_range": "roughly 10-15° in men and 15-20° in women in standing clinical measure; method-sensitive",
                                                "unit": "degree"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Transverse, stellate, or comminuted fracture with disruption of the extensor mechanism and risk of nonunion or painful hardware after tension-band fixation.",
                                            "Patellar dislocation or chronic instability, usually lateral, with medial patellofemoral ligament (MPFL) injury and osteochondral fracture of the medial facet or lateral femoral condyle.",
                                            "Patellofemoral osteoarthritis and chondromalacia; overstuffing or malrotation of a TKA femoral or patellar component causing pain, clunk, or accelerated wear.",
                                            "Patellar tendon rupture or quadriceps tendon rupture at the poles; avascular necrosis or fragmentation after excessive lateral release or fat-pad excision.",
                                            "Bipartite patella misread as acute fracture, leading to unnecessary fixation.",
                                            "Patella baja after TKA or tibial tubercle transfer, with restricted flexion; patella alta with reduced constraint and recurrent instability.",
                                            "In horses: intermittent upward fixation of the patella (locking of the medial patellar ligament).",
                                            "If the limpet sense is used: overharvest and habitat loss of protected Patella species."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "English common name is kneecap / kneepan; many European languages keep a form of Latin patella (French rotule is the usual clinical common name).",
                                            "Radiographic height indices and 'normal' cut-offs differ by school (Insall-Salvati vs Blackburne-Peel vs Caton-Deschamps vs patellotrochlear index).",
                                            "Surgical default in TKA (always resurface vs selective resurfacing of the patella) varies by country and training tradition, notably North America vs parts of Europe and East Asia.",
                                            "Veterinary emphasis (equine stay apparatus, canine medial patellar luxation grades) is a separate practice community from human orthopaedics.",
                                            "Genus Patella is a North-East Atlantic / Mediterranean intertidal taxon; other 'limpets' belong to different families and should not inherit this name."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "name": "femoral trochlea (patellar groove of the distal femur)",
                                                "difference": "The trochlea is a femoral articular surface; the patella is the mobile sesamoid that rides in it. On a true lateral radiograph the patella is the anterior ossific density separate from the femoral condyles."
                                            },
                                            {
                                                "name": "patellar tendon (ligamentum patellae) and quadriceps tendon",
                                                "difference": "Soft-tissue continuations of the extensor mechanism proximal and distal to the bone; MRI or ultrasound shows fibre signal without cortical bone, except at entheses."
                                            },
                                            {
                                                "name": "fabella",
                                                "difference": "A sesamoid in the lateral gastrocnemius tendon behind the knee, not in the quadriceps tendon in front of it."
                                            },
                                            {
                                                "name": "tibial tuberosity / Osgood-Schlatter fragment",
                                                "difference": "Apophysis of the tibia at the distal patellar-tendon insertion, well distal to the patella on a lateral radiograph."
                                            },
                                            {
                                                "name": "bipartite patella vs acute patellar fracture",
                                                "difference": "Bipartite fragments (usually superolateral) have rounded, corticated, matching margins and often contralateral symmetry; acute fractures have sharp non-sclerotic edges, marrow oedema, and a compatible injury history."
                                            },
                                            {
                                                "name": "prepatellar bursa (and housemaid's knee swelling)",
                                                "difference": "A subcutaneous synovial sac anterior to the patella; fluctuation and absence of bony disruption on radiograph separate bursitis from osseous pathology."
                                            },
                                            {
                                                "name": "genus Patella (true limpet) vs anatomical patella",
                                                "difference": "A marine gastropod with a conical shell; identified by taxonomy (Patellidae), habitat, and radula, not by knee anatomy. Shared Latin name only."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of patella this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry intend this entry to cover human patellae only or patellae across species, and which recognition criteria require species-specific extensions?",
                "Which developmental references and evidential criteria should govern interpretation of incomplete ossification and multipartite configurations?",
                "Which measurement methods, reference populations and examination conditions should govern interpretation of patellar height, tilt, translation and mobility?",
                "Which validated terminology or grading systems should represent patellar fractures and articular-surface findings without implying unsupported comparability?",
                "How should identity persist after partial or total patellar resection, and how should the registry link residual tissue, historical anatomy and prosthetic components?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 35
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "chemical substance or material",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a patella, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise a patella, assess its documented condition and functional relationships, and identify appropriate next actions within the available evidence and authority.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: right patella, left patella.",
                "2 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 60 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a patella, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state",
                "use it up, and then need more of it"
            ],
            "howItIsRecognised": [
                "Not recognisable by sight in any reliable way. Appearance varies with grade, form and additives; identification is by label, by documentation, or by assay."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "right patella",
                        "left patella"
                    ]
                }
            ],
            "standing": "Described in 60 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one patella from another, and a patella from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a patella sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a patella from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "form-and-composition",
                        "name": "Form, composition and condition",
                        "description": "What a patella is made of, what shape and size it takes, and what state it is in.",
                        "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.",
                        "layers": [
                            {
                                "id": "form-and-dimensions",
                                "name": "Form and dimensions",
                                "description": "Shape, size, mass and the ranges these take across examples.",
                                "findings": [
                                    {
                                        "id": "measurable-dimensions",
                                        "name": "Measurable dimensions and their units",
                                        "description": "The quantities worth recording and the units they are recorded in.",
                                        "questions": [
                                            {
                                                "id": "measurable-dimensions-q01",
                                                "text": "What identifies and describes the dimensions of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q02",
                                                "text": "Who or what asserted this about the dimensions of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q03",
                                                "text": "What may an agent decide or do once the dimensions of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a patella is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q02",
                                                "text": "Who or what asserted this about the composition of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q03",
                                                "text": "What may an agent decide or do once the composition of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-integrity",
                                "name": "Condition and integrity",
                                "description": "Wear, damage, health and the difference between working and broken.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition, damage and health",
                                        "description": "How the condition of a patella is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "Who or what asserted this about the condition of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q03",
                                                "text": "What may an agent decide or do once the condition of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a patella is, how it got there and where it may go (varies).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a patella is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a patella is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a patella passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a patella between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a patella, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a patella is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a patella and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a patella is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a patella performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a patella.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a patella at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "supply-and-consumption",
                                "name": "Supply and consumption",
                                "description": "Quantities, rates and what running out means.",
                                "findings": [
                                    {
                                        "id": "consumption-and-stock",
                                        "name": "Consumption, stock and replenishment",
                                        "description": "How much of a patella there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q02",
                                                "text": "Who or what asserted this about the supply of a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q03",
                                                "text": "What may an agent decide or do once the supply of a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "composition-and-identity",
                        "name": "Composition, grade and chemical identity",
                        "description": "What patella is made of and how pure the thing in hand is.",
                        "rationale": "Grade decides what a substance may be used for, so a model that records only the name cannot support any decision about use.",
                        "layers": [
                            {
                                "id": "chemical-identity",
                                "name": "Chemical identity",
                                "description": "Formula, structure and the registry numbers that name it unambiguously.",
                                "findings": [
                                    {
                                        "id": "identity-record",
                                        "name": "Identity and registry numbers",
                                        "description": "What identifies this substance across suppliers and regulators.",
                                        "questions": [
                                            {
                                                "id": "identity-record-q01",
                                                "text": "What formula, structure and registry identifiers name patella unambiguously?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "identity-record-q02",
                                                "text": "Which related substances share a name in common use but not an identifier?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-and-impurities",
                                "name": "Grade, purity and impurities",
                                "description": "The specification a batch meets and what else is in it.",
                                "findings": [
                                    {
                                        "id": "specification",
                                        "name": "Specification and assay",
                                        "description": "How purity is stated and measured, and which impurities matter.",
                                        "questions": [
                                            {
                                                "id": "specification-q01",
                                                "text": "What grades of patella exist, how is purity assayed, and which impurities are limited?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "specification-q02",
                                                "text": "Which use requires which grade, and what happens when a lower grade is substituted?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "properties-and-behaviour",
                        "name": "Properties and behaviour",
                        "description": "How patella behaves under conditions an agent can measure or change.",
                        "rationale": "Physical constants are the part of a substance model that transfers between contexts, and each needs its unit and its conditions.",
                        "layers": [
                            {
                                "id": "physical-constants",
                                "name": "Physical constants",
                                "description": "Values that hold for the pure substance, with their conditions.",
                                "findings": [
                                    {
                                        "id": "constants-record",
                                        "name": "Constants and conditions",
                                        "description": "The quantities worth recording and the state they apply in.",
                                        "questions": [
                                            {
                                                "id": "constants-record-q01",
                                                "text": "What are the defining physical constants of patella, in what units and under what conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "constants-record-q02",
                                                "text": "Which of these values change with grade or form rather than being fixed?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "stability-and-reactivity",
                                "name": "Stability and reactivity",
                                "description": "What it reacts with, degrades into, and how it is stored.",
                                "findings": [
                                    {
                                        "id": "incompatibilities",
                                        "name": "Incompatibilities and degradation",
                                        "description": "What must not meet it, and what it becomes over time.",
                                        "questions": [
                                            {
                                                "id": "incompatibilities-q01",
                                                "text": "What is patella incompatible with, and what does it degrade into under storage?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "incompatibilities-q02",
                                                "text": "What storage and handling does that require, and who is competent to do it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazard-and-regulation",
                        "name": "Hazard classification and regulation",
                        "description": "How patella can harm, and what the law says about holding and moving it.",
                        "rationale": "A substance model without its hazard class and its regulatory identity is unusable in exactly the situations that matter.",
                        "layers": [
                            {
                                "id": "hazard-class",
                                "name": "Hazard classification",
                                "description": "Classified hazards, exposure limits and protective measures.",
                                "findings": [
                                    {
                                        "id": "classified-hazards",
                                        "name": "Classified hazards and limits",
                                        "description": "The classification, the scheme it belongs to, and the limits set.",
                                        "questions": [
                                            {
                                                "id": "classified-hazards-q01",
                                                "text": "How is patella classified for hazard, under which scheme, and what exposure limits apply?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "classified-hazards-q02",
                                                "text": "What protection does handling require, and what must an agent refuse to do without it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "regulatory-identity",
                                "name": "Regulatory identity and control",
                                "description": "Registration, restriction and transport rules by jurisdiction.",
                                "findings": [
                                    {
                                        "id": "controls",
                                        "name": "Controls and jurisdiction",
                                        "description": "Where it is restricted and what the restriction attaches to.",
                                        "questions": [
                                            {
                                                "id": "controls-q01",
                                                "text": "Which registrations, restrictions or transport rules cover patella, and where?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "controls-q02",
                                                "text": "Does the control attach to the substance, its concentration, or its intended use?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a patella came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a patella and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a patella is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a patella, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a patella, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a patella is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 9,
                "layers": 20,
                "findings": 22,
                "questions": 60
            }
        }
    }
}