{
    "model": {
        "rank": 6767,
        "code": "thing-q188209",
        "model_id": "vr.tr.axle",
        "name": "axle",
        "purpose": "Enable an AI agent to identify an axle, understand its wheel-support and possible torque-transmission roles, assess its condition, and determine compatible installation or maintenance actions.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q188209/",
        "tier": 2,
        "score": 58,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "swing axle",
                "rear axle",
                "lower axle",
                "Collinge Axle",
                "Twist-beam rear suspension",
                "Earth's rotational axis",
                "portal axle",
                "front axle",
                "optical axis",
                "beam axle",
                "standard axle",
                "torsion bar suspension",
                "Short long arms suspension",
                "steering undercarriage",
                "turntable",
                "independent torsion bar suspension"
            ],
            "aliasCount": 16,
            "merged": 16,
            "knownIn": 58,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q188209",
                "url": "https://www.wikidata.org/wiki/Q188209",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T23:27:52Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 20.6,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a0887e-e985-7ad2-9fe9-2b467333e62d\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: axle\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 007: 1001 registered",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 59,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a0887e-e973-7e60-b0af-486c8283d858\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: axle\nRegistry id: vr.tr.axle\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext for th"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q188209",
                "registryId": "vr.tr.axle",
                "name": "axle",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q188209/",
            "model": {
                "registry_id": "vr.tr.axle",
                "name": "axle",
                "purpose": "Enable an AI agent to identify an axle, understand its wheel-support and possible torque-transmission roles, assess its condition, and determine compatible installation or maintenance actions.",
                "definition": "An axle is a mechanical member that locates and supports a wheel, wheelset or other rotating component and carries its loads, either remaining stationary while the component rotates around it or rotating with it, and in some designs also transmitting driving torque.",
                "scope_statement": "This model owns the axle as a mechanical member that supports or locates rotating wheels or rollers, including its load paths, rotational role, interfaces, operating limits, and condition; it distinguishes the member from assemblies also called axles.",
                "in_scope": [
                    "Stationary and rotating axle members used with wheels or rollers",
                    "Load support, wheel location, and any drive-torque transmission performed by the axle",
                    "Axle geometry, material specification, and manufacturing condition",
                    "Bearing seats, journals, wheel interfaces, and retention features",
                    "Operating limits, damage assessment, and axle-specific maintenance decisions"
                ],
                "out_of_scope": [
                    "Complete vehicle axle assemblies containing housings, differentials, brakes, and suspension components",
                    "Wheels, tyres, hubs, bearings, and seals as independently maintained components",
                    "General-purpose shafts whose role does not include an axle function",
                    "Whole-vehicle steering, suspension, braking, and drivetrain control",
                    "Product-line catalogues and individual asset histories except as linked records"
                ],
                "distinguishing_features": [
                    "Identify whether the member supports or locates a wheel or roller and defines its rotational axis; a rod with no such role is insufficient.",
                    "Determine whether wheels rotate around the member or rotate with it; rotation of the axle itself is not a required recognition test.",
                    "Trace wheel loads and drive torque separately to distinguish an axle member from an adjacent drive shaft or spindle under the applicable terminology.",
                    "Check whether the named object is a single load-bearing member or a complete assembly containing gears, housings, and other components.",
                    "Distinguish the physical member from the geometric axis about which rotation occurs."
                ],
                "characteristics": [
                    {
                        "name": "Axle functional role",
                        "kind": "category",
                        "unit_or_values": "wheel support; wheel location; torque transmission; combinations, with terminology source",
                        "why_it_matters": "Establishes the member's responsibilities without assuming that every axle carries the same loads."
                    },
                    {
                        "name": "Rotation relationship",
                        "kind": "relation",
                        "unit_or_values": "axle stationary relative to support; axle rotates with wheel; other documented arrangement",
                        "why_it_matters": "Determines which surfaces form bearing interfaces and how motion passes through the installation."
                    },
                    {
                        "name": "Supported and connected components",
                        "kind": "relation",
                        "unit_or_values": "linked wheels, rollers, hubs, bearings, supports, and torque-coupling components",
                        "why_it_matters": "Locates the axle within the actual load path and identifies installation dependencies."
                    },
                    {
                        "name": "Axial geometry and section profile",
                        "kind": "measurement",
                        "unit_or_values": "overall and shoulder lengths in mm; diameters and wall thicknesses in mm; geometry reference",
                        "why_it_matters": "Controls fit, support spacing, and section-dependent strength."
                    },
                    {
                        "name": "Interface specification",
                        "kind": "category",
                        "unit_or_values": "documented bearing fits, splines, keys, threads, flanges, and retention features",
                        "why_it_matters": "Prevents compatibility decisions based only on nominal diameter or appearance."
                    },
                    {
                        "name": "Material and processing specification",
                        "kind": "category",
                        "unit_or_values": "material designation; heat treatment; surface treatment; unknown",
                        "why_it_matters": "Supports interpretation of load capability, inspection findings, and repair restrictions."
                    },
                    {
                        "name": "Permissible loading",
                        "kind": "measurement",
                        "unit_or_values": "forces in N; bending moments and torque in N·m; associated duty and support conditions",
                        "why_it_matters": "Allows proposed use to be compared with documented limits for the relevant configuration."
                    },
                    {
                        "name": "Permissible rotational speed",
                        "kind": "measurement",
                        "unit_or_values": "r/min, with rotating component and operating conditions identified; not applicable where appropriate",
                        "why_it_matters": "Separates axle rotation limits from wheel or bearing speed limits."
                    },
                    {
                        "name": "Geometric condition",
                        "kind": "measurement",
                        "unit_or_values": "runout, straightness deviation, and seat wear in mm or µm, with datum and method",
                        "why_it_matters": "Makes deformation and interface degradation assessable against applicable tolerances."
                    },
                    {
                        "name": "Service condition",
                        "kind": "state",
                        "unit_or_values": "unassessed; serviceable under stated criteria; restricted; quarantined; rejected",
                        "why_it_matters": "Connects inspection evidence to permitted actions while preserving uncertainty."
                    }
                ],
                "affordances": [
                    "Classify the axle's support, rotation, and torque-transmission roles in a specified installation.",
                    "Check replacement compatibility against geometry, interfaces, loading, and application documentation.",
                    "Record axle measurements and inspection evidence against the relevant acceptance criteria.",
                    "Assess whether a proposed duty remains within documented axle limits.",
                    "Determine permitted installation, removal, repair, or replacement actions from applicable procedures.",
                    "Quarantine an axle when damage evidence or missing information prevents a supported serviceability decision."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "axle-identity-and-role",
                        "name": "Axle identity and role",
                        "description": "Establish what the word axle denotes in the application and which mechanical roles the member performs.",
                        "rationale": "Axle terminology can refer to different members or whole assemblies, creating consequential boundary errors.",
                        "layers": [
                            {
                                "id": "member-and-assembly-boundary",
                                "name": "Member and assembly boundary",
                                "description": "Separate the physical axle member from adjacent components and broader assembly names.",
                                "findings": [
                                    {
                                        "id": "axle-referent",
                                        "name": "Axle referent",
                                        "description": "Record the physical extent of the object called an axle and the terminology authority used.",
                                        "questions": [
                                            {
                                                "text": "Does axle denote a single member, an integral member-and-flange part, or a complete assembly in this application?",
                                                "kind": "boundary",
                                                "id": "axle-referent-q01"
                                            },
                                            {
                                                "text": "Which drawing, manufacturer document, or domain reference establishes that usage?",
                                                "kind": "provenance",
                                                "id": "axle-referent-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "support-and-rotation-role",
                                "name": "Support and rotation role",
                                "description": "Identify the axle's relationship to wheel rotation, wheel support, and propulsion.",
                                "findings": [
                                    {
                                        "id": "axle-motion-and-function",
                                        "name": "Axle motion and function",
                                        "description": "Describe support and torque roles separately and relative to named connected components.",
                                        "questions": [
                                            {
                                                "text": "Which wheels or rollers does this member support or locate, and what makes it an axle in this arrangement?",
                                                "kind": "definition",
                                                "id": "axle-motion-and-function-q01"
                                            },
                                            {
                                                "text": "Does the axle remain stationary, rotate with a wheel, or have another documented motion relationship?",
                                                "kind": "boundary",
                                                "id": "axle-motion-and-function-q02"
                                            },
                                            {
                                                "text": "Does drive or braking torque pass through this member, and between which interfaces?",
                                                "kind": "boundary",
                                                "id": "axle-motion-and-function-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "axle-geometry-and-interfaces",
                        "name": "Axle geometry and interfaces",
                        "description": "Describe the member's section profile and its connections to bearings, wheels, supports, and retainers.",
                        "rationale": "An axle can appear interchangeable while differing in bearing fit, shoulder position, or retention geometry.",
                        "layers": [
                            {
                                "id": "section-and-support-geometry",
                                "name": "Section and support geometry",
                                "description": "Capture the geometry needed to establish fit and interpret loading.",
                                "findings": [
                                    {
                                        "id": "axle-dimensional-reference",
                                        "name": "Axle dimensional reference",
                                        "description": "Record dimensions against defined datums, including section changes and support locations.",
                                        "questions": [
                                            {
                                                "text": "What are the axle's lengths, diameters, bore dimensions where present, and shoulder locations relative to specified datums?",
                                                "kind": "measurement",
                                                "id": "axle-dimensional-reference-q01"
                                            },
                                            {
                                                "text": "Where are the wheel load application points and bearing or structural support points along the axle?",
                                                "kind": "measurement",
                                                "id": "axle-dimensional-reference-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "fits-and-retention",
                                "name": "Fits and retention",
                                "description": "Identify how connected components locate, rotate, transmit torque, and remain secured.",
                                "findings": [
                                    {
                                        "id": "axle-interface-compatibility",
                                        "name": "Axle interface compatibility",
                                        "description": "Make interface requirements explicit before accepting a mating component or replacement axle.",
                                        "questions": [
                                            {
                                                "text": "What bearing-seat fits, wheel or hub connections, and torque-coupling specifications apply?",
                                                "kind": "measurement",
                                                "id": "axle-interface-compatibility-q01"
                                            },
                                            {
                                                "text": "Which shoulders, nuts, clips, pins, or other features retain the components axially, and what installation requirements govern them?",
                                                "kind": "action",
                                                "id": "axle-interface-compatibility-q02"
                                            },
                                            {
                                                "text": "Which interface features belong to the axle itself and which belong to replaceable mating components?",
                                                "kind": "boundary",
                                                "id": "axle-interface-compatibility-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "axle-loads-and-operating-envelope",
                        "name": "Axle loads and operating envelope",
                        "description": "Connect the axle's load paths and material specification to documented operating limits.",
                        "rationale": "Axle suitability depends on the support arrangement and duty, so an isolated load rating is insufficient.",
                        "layers": [
                            {
                                "id": "load-path-and-duty",
                                "name": "Load path and duty",
                                "description": "Describe forces, moments, torque, and repeated loading for the intended installation.",
                                "findings": [
                                    {
                                        "id": "axle-loading-case",
                                        "name": "Axle loading case",
                                        "description": "Associate each loading assessment with its configuration and service conditions.",
                                        "questions": [
                                            {
                                                "text": "What radial and axial forces, bending moments, and transmitted torque act on the axle under the assessed duty?",
                                                "kind": "measurement",
                                                "id": "axle-loading-case-q01"
                                            },
                                            {
                                                "text": "What cyclic loads, impacts, reversals, or exceptional events must the application account for?",
                                                "kind": "measurement",
                                                "id": "axle-loading-case-q02"
                                            },
                                            {
                                                "text": "Which evidence establishes these loads and the support arrangement used to evaluate them?",
                                                "kind": "provenance",
                                                "id": "axle-loading-case-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-allowable-duty",
                                "name": "Material and allowable duty",
                                "description": "Record the material basis and application-specific limits that constrain use.",
                                "findings": [
                                    {
                                        "id": "axle-capability-evidence",
                                        "name": "Axle capability evidence",
                                        "description": "Keep material, processing, and permissible duty linked to supporting documentation.",
                                        "questions": [
                                            {
                                                "text": "What evidence identifies the axle material, heat treatment, and relevant surface processing?",
                                                "kind": "provenance",
                                                "id": "axle-capability-evidence-q01"
                                            },
                                            {
                                                "text": "What documented load, torque, speed, temperature, and service-life limits apply to this axle configuration?",
                                                "kind": "measurement",
                                                "id": "axle-capability-evidence-q02"
                                            },
                                            {
                                                "text": "What verification is required before using the axle with different wheel spacing, supports, or duty?",
                                                "kind": "action",
                                                "id": "axle-capability-evidence-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "axle-condition-and-intervention",
                        "name": "Axle condition and intervention",
                        "description": "Connect inspection of the axle member to serviceability and permitted maintenance actions.",
                        "rationale": "Damage to journals, retention features, or the load-bearing section can require different evidence and interventions.",
                        "layers": [
                            {
                                "id": "damage-and-dimensional-condition",
                                "name": "Damage and dimensional condition",
                                "description": "Assess deformation, wear, corrosion, and indications of cracking using applicable methods.",
                                "findings": [
                                    {
                                        "id": "axle-inspection-evidence",
                                        "name": "Axle inspection evidence",
                                        "description": "Record location-specific observations and measurements without treating an uninspected axle as sound.",
                                        "questions": [
                                            {
                                                "text": "What runout, straightness deviation, journal wear, and retention-feature damage have been measured, using which datums and methods?",
                                                "kind": "measurement",
                                                "id": "axle-inspection-evidence-q01"
                                            },
                                            {
                                                "text": "What evidence of cracking, corrosion, fretting, or other surface damage exists, and which axle regions remain unexamined?",
                                                "kind": "measurement",
                                                "id": "axle-inspection-evidence-q02"
                                            },
                                            {
                                                "text": "Which application-specific inspection procedure and acceptance criteria govern the assessment?",
                                                "kind": "provenance",
                                                "id": "axle-inspection-evidence-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "serviceability-and-maintenance-actions",
                                "name": "Serviceability and maintenance actions",
                                "description": "Determine supported actions for installation, continued use, repair, or removal from service.",
                                "findings": [
                                    {
                                        "id": "axle-disposition",
                                        "name": "Axle disposition",
                                        "description": "Link each disposition to inspection evidence, documented limits, and authorized procedures.",
                                        "questions": [
                                            {
                                                "text": "Does the available evidence support continued service, restricted use, further inspection, or rejection?",
                                                "kind": "action",
                                                "id": "axle-disposition-q01"
                                            },
                                            {
                                                "text": "Which removal, installation, tightening, and post-installation checks are required for this axle arrangement?",
                                                "kind": "action",
                                                "id": "axle-disposition-q02"
                                            },
                                            {
                                                "text": "Are proposed straightening, welding, machining, or surface restoration operations permitted by the applicable repair authority?",
                                                "kind": "action",
                                                "id": "axle-disposition-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-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "With no recorded sense, this describes the mechanical component broadly; automotive assembly usage should be distinguished during research.",
                                            "The listed kinds overlap: a railway axle can be both solid and non-driven, for example.",
                                            "Applicable standards, dimensions and load ratings depend strongly on application and design; none are asserted here without verification."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of axle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Driven or live axle",
                                            "Non-driven or dead axle",
                                            "Stub axle",
                                            "Solid axle",
                                            "Hollow axle",
                                            "Railway wheelset axle"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of axle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "scheme": "Manufacturer part number",
                                                "value_or_pattern": "Manufacturer-specific alphanumeric designation",
                                                "note": "Identifies a particular axle design or replacement part; there is no universal part-number format."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of axle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Supporting road-vehicle wheels and transferring loads between wheels and suspension.",
                                            "Transmitting driving torque to wheels in driven-axle arrangements.",
                                            "Connecting and supporting the wheels of conventional railway wheelsets.",
                                            "Supporting wheels on trailers, carts and wheelbarrows.",
                                            "Supporting rotating pulleys or rollers in machinery."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of axle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Fatigue cracking under repeated bending or combined bending and torsion, potentially causing fracture.",
                                            "Permanent bending or fracture from overload or impact.",
                                            "Wear or fretting at bearing seats, wheel seats and other fitted interfaces.",
                                            "Corrosion and surface damage that reduce section thickness or initiate fatigue cracks.",
                                            "Failure of retention features or associated bearings, potentially allowing wheel displacement, separation or seizure."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of axle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Automotive usage can apply 'axle' to an entire assembly containing a housing, differential and shafts; component-level usage may refer only to a supporting member or drive shaft."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of axle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "Shaft",
                                                "difference": "A shaft commonly transmits torque; an axle primarily locates and supports rotating components, although a driven axle can perform both functions."
                                            },
                                            {
                                                "name": "Bearing",
                                                "difference": "A bearing permits constrained relative motion at a support interface; the axle is the member supported by, or carrying, that interface."
                                            },
                                            {
                                                "name": "Hub",
                                                "difference": "A hub is the central wheel component that mounts to or rotates around an axle."
                                            },
                                            {
                                                "name": "Differential",
                                                "difference": "A differential distributes torque while permitting different output speeds; it may be housed within an axle assembly but is a distinct mechanism."
                                            },
                                            {
                                                "name": "Wheelset",
                                                "difference": "A conventional railway wheelset is the assembly of wheels and their common axle, rather than the axle alone."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of axle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Which authoritative definition should govern the boundary between axle, spindle, stub axle, half-shaft, and complete axle assembly for this registry entry?",
                "Does an existing Vercy world model already own this concept or part of its intended scope?",
                "Which application families require distinct axle requirements, and which governing standards and issuing bodies apply to each?",
                "What sourced dimensional ranges, loading conventions, and inspection criteria can be stated without implying a universal axle specification?",
                "Which axle repair methods are permitted in each application, and what evidence is required before returning a repaired member to service?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 15,
                "questions": 29
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "device, machine or tool",
            "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 axle, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to identify an axle, understand its wheel-support and possible torque-transmission roles, assess its condition, and determine compatible installation or maintenance actions.",
            "characteristics": {
                "substance": "material",
                "origin": "manufactured",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: swing axle, rear axle, lower axle, Collinge Axle, Twist-beam rear suspension, Earth's rotational axis, portal axle, front axle, optical axis, beam axle, standard axle, torsion bar suspension.",
                "16 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 58 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 axle, 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"
            ],
            "howItIsRecognised": [
                "Recognised by form, by the arrangement of its controls, and by markings - a plate, a model number, a certification mark. Form alone rarely separates two models that do very different things."
            ],
            "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": [
                        "swing axle",
                        "rear axle",
                        "lower axle",
                        "Collinge Axle",
                        "Twist-beam rear suspension",
                        "Earth's rotational axis",
                        "portal axle",
                        "front axle",
                        "optical axis",
                        "beam axle",
                        "standard axle",
                        "torsion bar suspension"
                    ]
                }
            ],
            "standing": "Described in 58 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 16 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 axle from another, and a axle 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 axle, 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 axle, 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 axle 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 axle, 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 axle, 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 axle 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 axle 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 axle, 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 axle, 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 axle 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 axle from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a axle, 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 axle, 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 axle 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 axle 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 axle, 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 axle, 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 axle 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 axle is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a axle, 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 axle, 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 axle 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 axle is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a axle, 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 axle, 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 axle 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 axle 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 axle is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a axle, 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 axle, 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 axle 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 axle 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 axle, 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 axle, 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 axle 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 axle 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 axle between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a axle, 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 axle, 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 axle 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 axle, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a axle 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 axle, 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 axle, 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 axle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "function-and-principle",
                        "name": "Function and operating principle",
                        "description": "What axle is for and how it achieves it.",
                        "rationale": "Two devices with the same name can work on different principles, and the principle is what predicts failure and constrains use.",
                        "layers": [
                            {
                                "id": "intended-function",
                                "name": "Intended function",
                                "description": "The job it does, and the jobs it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-record",
                                        "name": "Function, principle and variants",
                                        "description": "What it does, how, and which variants do it differently.",
                                        "questions": [
                                            {
                                                "id": "function-record-q01",
                                                "text": "What function does axle perform, on what operating principle, and which variants differ in that principle?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "function-record-q02",
                                                "text": "What use falls outside the intended function but happens in practice?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "capacity-and-rating",
                                "name": "Capacity and rating",
                                "description": "The numbers that say what it can do and where it stops.",
                                "findings": [
                                    {
                                        "id": "ratings",
                                        "name": "Ratings and their conditions",
                                        "description": "Rated capacity, power, throughput and the conditions each assumes.",
                                        "questions": [
                                            {
                                                "id": "ratings-q01",
                                                "text": "What ratings characterise axle, in what units, and under what stated conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "ratings-q02",
                                                "text": "What happens beyond the rating - degradation, refusal, damage - and how is that detected?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "operation-and-state",
                        "name": "Operation, controls and state",
                        "description": "How axle is operated and what state it is in right now.",
                        "rationale": "An agent acting on a device needs its current state and the controls that change it, not just its specification.",
                        "layers": [
                            {
                                "id": "controls-and-modes",
                                "name": "Controls and modes",
                                "description": "What can be set, what that changes, and what is interlocked.",
                                "findings": [
                                    {
                                        "id": "control-surface",
                                        "name": "Control surface and interlocks",
                                        "description": "The settings available and the conditions that block them.",
                                        "questions": [
                                            {
                                                "id": "control-surface-q01",
                                                "text": "What controls and modes does axle have, and what does each change?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "control-surface-q02",
                                                "text": "Which actions are interlocked or forbidden in which state, and what must be true before acting?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-maintenance",
                                "name": "Condition and maintenance",
                                "description": "Wear, service intervals, consumables and the line between working and broken.",
                                "findings": [
                                    {
                                        "id": "service-record",
                                        "name": "Condition, service and consumables",
                                        "description": "What is consumed, what is serviced, and how condition is judged.",
                                        "questions": [
                                            {
                                                "id": "service-record-q01",
                                                "text": "What consumables and service does axle need, at what interval, and on whose authority?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "service-record-q02",
                                                "text": "What evidence separates a unit that is working from one that is out of service?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "kind-model-unit",
                        "name": "Kind, model and unit",
                        "description": "Whether a claim about axle is about the kind, a product line, or one physical unit.",
                        "rationale": "This is the boundary most often got wrong for made things, and getting it wrong mixes a catalogue entry with the machine in the yard.",
                        "layers": [
                            {
                                "id": "level-of-reference",
                                "name": "Level of reference",
                                "description": "The three levels and what belongs at each.",
                                "findings": [
                                    {
                                        "id": "level-rules",
                                        "name": "What belongs to kind, model and unit",
                                        "description": "Which properties are shared by all of them and which are not.",
                                        "questions": [
                                            {
                                                "id": "level-rules-q01",
                                                "text": "Which facts about axle hold for every one of them, which for a model, and which only for one unit?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "level-rules-q02",
                                                "text": "What identifies an individual unit, and what should an agent do when it has only the kind?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "standards-and-conformity",
                                "name": "Standards and conformity",
                                "description": "The standards a working example must meet and who attests it.",
                                "findings": [
                                    {
                                        "id": "conformity",
                                        "name": "Standards, marks and attestation",
                                        "description": "Which standard applies, who certifies, and what the mark means.",
                                        "questions": [
                                            {
                                                "id": "conformity-q01",
                                                "text": "Which standards govern axle, issued by whom, and what does conformity actually assert?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "conformity-q02",
                                                "text": "What may an agent conclude from a certification mark, and what may it not?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a axle 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 axle and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a axle, 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 axle, 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 axle 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 axle is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a axle, 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 axle, 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 axle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 8,
                "layers": 17,
                "findings": 19,
                "questions": 51
            }
        }
    }
}