{
    "model": {
        "rank": 3493,
        "code": "thing-q132390",
        "model_id": "vr.tr.gill",
        "name": "gill",
        "purpose": "Enable an agent to recognise an animal gill, assess its respiratory condition in context, and identify appropriate observation or care actions.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.LIV",
        "industry": "",
        "version": "",
        "url": "/models/thing/q132390/",
        "tier": 2,
        "score": 85,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "external gill",
                "Fish gill"
            ],
            "aliasCount": 2,
            "merged": 2,
            "knownIn": 85,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.gill-animal",
            "source": {
                "dataset": "wikidata",
                "item": "Q132390",
                "url": "https://www.wikidata.org/wiki/Q132390",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T14:54:08Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 24.7,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c5b-d2d5-7752-a6bf-adb9dbc1226a\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: gill\nSense to describe: (none recorded)\nDomain code: PHY.LIV\nAlso known as: (none)\n\n\nContext for this batch of 546 things:\n# Batch 003: 1001 registered ",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 61.1,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c5b-d2ea-7801-995e-b2fca36a8993\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: gill\nRegistry id: vr.tr.gill\nPlane / domain: PHY / PHY.LIV\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext for th"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q132390",
                "registryId": "vr.tr.gill",
                "name": "gill",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.LIV"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q132390/",
            "model": {
                "registry_id": "vr.tr.gill",
                "name": "gill",
                "purpose": "Enable an agent to recognise an animal gill, assess its respiratory condition in context, and identify appropriate observation or care actions.",
                "definition": "A gill is a respiratory organ in an aquatic animal that provides a large, thin exchange surface through which dissolved oxygen is taken up from water and carbon dioxide is released.",
                "scope_statement": "This model owns gills as animal respiratory organs or structures, including their attachment, exchange surfaces, ventilation, developmental condition and functional impairment; it does not treat the gill as an organism or assume that gills across animal groups share one anatomical design or evolutionary origin.",
                "in_scope": [
                    "Identification and boundaries of an individual gill or explicitly identified gill set",
                    "Taxon-dependent supporting structures and respiratory surfaces",
                    "Movement of respiratory water and internal transport of exchanged gases",
                    "Developmental stage, integrity and observable respiratory condition",
                    "Relationships between gill function, water conditions and locally supported secondary functions"
                ],
                "out_of_scope": [
                    "Whole-animal taxonomy, population distribution and conservation assessment",
                    "Lungs, skin and other respiratory surfaces except as functional neighbours",
                    "Mushroom gills and other non-animal uses of the name",
                    "Whole-body circulation and metabolism beyond their interface with the gill",
                    "Aquatic habitat management and disease treatment protocols"
                ],
                "distinguishing_features": [
                    "Identify an animal structure whose established role includes gas exchange with surrounding water; a folded or filamentous appearance alone is insufficient.",
                    "Distinguish the exchange surface from a cover, supporting arch or opening through which water passes; these may belong to the apparatus without individually being a gill.",
                    "Distinguish a spatially identifiable gill from general gas exchange across the body surface.",
                    "Confirm the host group and life stage before interpreting architecture: fish-style arches and lamellae are not universal criteria.",
                    "Exclude fungal spore-bearing gills despite the shared name and potentially similar plate-like appearance."
                ],
                "characteristics": [
                    {
                        "name": "Host and developmental context",
                        "kind": "relation",
                        "unit_or_values": "Host organism reference, taxon identification with confidence, and life stage",
                        "why_it_matters": "Determines which structures, functions and developmental changes are expected."
                    },
                    {
                        "name": "Gill configuration and position",
                        "kind": "category",
                        "unit_or_values": "External or enclosed; body location, side, attachment and taxon-appropriate anatomical designation",
                        "why_it_matters": "Supports recognition and distinguishes the observed gill from adjacent structures."
                    },
                    {
                        "name": "Respiratory surface extent",
                        "kind": "measurement",
                        "unit_or_values": "Surface area in mm² or cm², with estimation method and identification of the measured gill or set",
                        "why_it_matters": "Allows comparison of exchange surface while making measurement limits explicit."
                    },
                    {
                        "name": "Ventilation condition",
                        "kind": "state",
                        "unit_or_values": "Water movement observed, reduced, absent, intermittent or unknown; mechanism and observation conditions recorded",
                        "why_it_matters": "An intact surface may provide inadequate exchange when water delivery is impaired."
                    },
                    {
                        "name": "Exchange-surface integrity",
                        "kind": "state",
                        "unit_or_values": "Intact, damaged, swollen, obstructed, covered by deposits or unresolved; extent and evidence recorded",
                        "why_it_matters": "Separates visible structural impairment from an unsupported diagnosis of its cause."
                    },
                    {
                        "name": "Respiratory water conditions",
                        "kind": "measurement",
                        "unit_or_values": "Dissolved oxygen in mg/L or percent saturation, temperature in °C, salinity with scale and unit, and pH",
                        "why_it_matters": "Makes respiratory observations interpretable in the environment actually reaching the gill."
                    },
                    {
                        "name": "Internal exchange pathway",
                        "kind": "category",
                        "unit_or_values": "Blood, hemolymph, tracheal connection, other supported pathway or unresolved",
                        "why_it_matters": "Prevents assumptions about vertebrate circulation from being applied to every animal gill."
                    }
                ],
                "affordances": [
                    "Locate and document a gill using anatomy appropriate to the host and life stage.",
                    "Compare repeated observations of the same gill or defined gill set for changes in integrity and ventilation.",
                    "Relate respiratory observations to water conditions measured near the exchange surface.",
                    "Flag evidence of impaired exchange for taxon-appropriate expert assessment.",
                    "Select an observation method that limits handling, exposure and damage to delicate exchange surfaces."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "gill-identity-and-boundaries",
                        "name": "Gill identity and boundaries",
                        "description": "Establishes which respiratory structure is being modelled and how it belongs to its host.",
                        "rationale": "The word gill covers different animal architectures and also has unrelated meanings.",
                        "layers": [
                            {
                                "id": "host-linked-identification",
                                "name": "Host-linked identification",
                                "description": "Anchors identification to animal group, life stage and evidence of respiratory function.",
                                "findings": [
                                    {
                                        "id": "animal-gill-recognition",
                                        "name": "Animal gill recognition",
                                        "description": "Record the evidence that the structure is a gill in this host rather than relying on shape or name.",
                                        "questions": [
                                            {
                                                "text": "Which host taxon and life stage does this gill belong to?",
                                                "kind": "definition",
                                                "id": "animal-gill-recognition-q01"
                                            },
                                            {
                                                "text": "Which anatomical reference or observation supports identifying this structure as a gill?",
                                                "kind": "provenance",
                                                "id": "animal-gill-recognition-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "anatomical-unit",
                                "name": "Anatomical unit",
                                "description": "Separates one gill, a gill set and the surrounding respiratory apparatus.",
                                "findings": [
                                    {
                                        "id": "gill-unit-boundary",
                                        "name": "Gill unit boundary",
                                        "description": "Define the counted unit and distinguish exchange tissue from associated supports, covers and passages.",
                                        "questions": [
                                            {
                                                "text": "Does this record describe one gill, one side's gills or the complete gill set?",
                                                "kind": "boundary",
                                                "id": "gill-unit-boundary-q01"
                                            },
                                            {
                                                "text": "Which attached supports, covers and water passages are included, and which are neighbouring structures?",
                                                "kind": "boundary",
                                                "id": "gill-unit-boundary-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "exchange-surface-architecture",
                        "name": "Exchange-surface architecture",
                        "description": "Describes how the gill presents and supports tissue used for gas exchange.",
                        "rationale": "Gill function depends on accessible exchange surfaces, but their arrangement must be established for the particular host.",
                        "layers": [
                            {
                                "id": "surface-organisation",
                                "name": "Surface organisation",
                                "description": "Records the arrangement and extent of respiratory tissue without imposing fish anatomy.",
                                "findings": [
                                    {
                                        "id": "respiratory-surface-layout",
                                        "name": "Respiratory surface layout",
                                        "description": "Identify the host-appropriate branches, folds, plates or other elements that constitute the exchange surface.",
                                        "questions": [
                                            {
                                                "text": "Which anatomical elements provide the respiratory surface in this host?",
                                                "kind": "definition",
                                                "id": "respiratory-surface-layout-q01"
                                            },
                                            {
                                                "text": "What surface dimensions or area can be measured, and what method and uncertainty accompany them?",
                                                "kind": "measurement",
                                                "id": "respiratory-surface-layout-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "support-and-exposure",
                                "name": "Support and exposure",
                                "description": "Connects attachment and enclosure to access by water and susceptibility to disturbance.",
                                "findings": [
                                    {
                                        "id": "surface-support-and-access",
                                        "name": "Surface support and access",
                                        "description": "Record how the exchange surface is held, protected and exposed to respiratory water.",
                                        "questions": [
                                            {
                                                "text": "How is the gill attached and supported, and is it externally exposed or enclosed?",
                                                "kind": "definition",
                                                "id": "surface-support-and-access-q01"
                                            },
                                            {
                                                "text": "Are its surfaces accessible to water, or are contact, collapse, deposits or obstruction limiting access?",
                                                "kind": "measurement",
                                                "id": "surface-support-and-access-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "ventilation-and-gas-transfer",
                        "name": "Ventilation and gas transfer",
                        "description": "Connects external water delivery with gas transfer into the host's internal transport pathway.",
                        "rationale": "Appearance alone cannot establish respiratory performance; both sides of the exchange interface matter.",
                        "layers": [
                            {
                                "id": "respiratory-water-delivery",
                                "name": "Respiratory water delivery",
                                "description": "Establishes how water reaches and leaves the exchange surfaces.",
                                "findings": [
                                    {
                                        "id": "water-flow-mechanism",
                                        "name": "Water-flow mechanism",
                                        "description": "Document the observed ventilation mechanism and avoid treating movement frequency alone as exchange performance.",
                                        "questions": [
                                            {
                                                "text": "What moves water across this gill, and what evidence establishes the flow path?",
                                                "kind": "definition",
                                                "id": "water-flow-mechanism-q01"
                                            },
                                            {
                                                "text": "What water-flow rate or ventilation movement can be measured under the recorded activity and water conditions?",
                                                "kind": "measurement",
                                                "id": "water-flow-mechanism-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "internal-transfer-interface",
                                "name": "Internal transfer interface",
                                "description": "Identifies the receiving pathway and the evidence available for actual gas transfer.",
                                "findings": [
                                    {
                                        "id": "gas-transfer-evidence",
                                        "name": "Gas-transfer evidence",
                                        "description": "Distinguish demonstrated exchange from inferred capacity and identify the internal pathway appropriate to the animal.",
                                        "questions": [
                                            {
                                                "text": "Does this gill exchange with blood, hemolymph, a tracheal system or another established pathway?",
                                                "kind": "definition",
                                                "id": "gas-transfer-evidence-q01"
                                            },
                                            {
                                                "text": "What measurements support gas-transfer performance, and do they apply to this gill or only to the whole animal?",
                                                "kind": "measurement",
                                                "id": "gas-transfer-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "condition-development-and-response",
                        "name": "Condition, development and response",
                        "description": "Interprets gill changes against developmental expectations and the immediate aquatic environment.",
                        "rationale": "Normal developmental change, environmental stress and tissue injury require different interpretations and actions.",
                        "layers": [
                            {
                                "id": "developmental-and-functional-baseline",
                                "name": "Developmental and functional baseline",
                                "description": "Establishes what this gill is expected to look like and do at the observed stage.",
                                "findings": [
                                    {
                                        "id": "stage-specific-gill-role",
                                        "name": "Stage-specific gill role",
                                        "description": "Record whether the gill is developing, maintained or normally regressing, together with any supported secondary functions.",
                                        "questions": [
                                            {
                                                "text": "Is the observed presence, size or regression of the gill expected at this host's life stage?",
                                                "kind": "boundary",
                                                "id": "stage-specific-gill-role-q01"
                                            },
                                            {
                                                "text": "Which references establish any roles in ion balance, acid-base regulation or excretion for this host's gills?",
                                                "kind": "provenance",
                                                "id": "stage-specific-gill-role-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "impairment-and-observation-actions",
                                "name": "Impairment and observation actions",
                                "description": "Links documented abnormalities and exposure conditions to proportionate next steps.",
                                "findings": [
                                    {
                                        "id": "gill-condition-triage",
                                        "name": "Gill condition triage",
                                        "description": "Record damage, swelling, coverage and ventilation changes while keeping observations separate from causal diagnosis.",
                                        "questions": [
                                            {
                                                "text": "What abnormalities are visible, how extensive are they, and what dissolved oxygen, temperature, salinity and pH accompanied the observation?",
                                                "kind": "measurement",
                                                "id": "gill-condition-triage-q01"
                                            },
                                            {
                                                "text": "Which minimally disturbing observation or expert assessment is justified, and what host-specific handling limits apply?",
                                                "kind": "action",
                                                "id": "gill-condition-triage-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "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": [
                                            "The intended sense is inferred to be the animal respiratory organ; no sense was recorded.",
                                            "Gills occur in unrelated animal lineages and do not constitute a taxon or a single universally homologous structure.",
                                            "Gill dimensions, physiology and tolerance limits depend on species, life stage and environment; no universal numerical ranges are supplied."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of gill 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": [
                                            "External gills exposed on the body surface",
                                            "Internal gills housed in a chamber or cavity",
                                            "Book gills, composed of stacked leaflike plates, as in horseshoe crabs",
                                            "Tracheal gills of aquatic insects, which exchange gases with the tracheal system"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of gill 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": [
                                            "Gas exchange in fish and many aquatic invertebrates",
                                            "Respiration during the aquatic larval stages of many amphibians",
                                            "Ion balance, acid-base regulation and nitrogenous waste excretion in many fish",
                                            "Assessment of animal health and water-quality effects through examination of gill tissue",
                                            "Particle capture and transport during filter feeding in many bivalve molluscs"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of gill 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": [
                                            "Low dissolved oxygen can prevent gills from meeting an animal's oxygen demand.",
                                            "Suspended particles can obstruct or injure exchange surfaces.",
                                            "Parasites and infectious disease can damage gill tissue and impair respiration.",
                                            "Toxic substances can damage the gill epithelium and disrupt gas exchange or ion regulation.",
                                            "In many aquatic species, exposure to air causes gill surfaces to collapse or dry, reducing effective exchange area."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of gill 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": "lung",
                                                "difference": "A lung exchanges gases primarily with air inside an internal respiratory cavity; a gill exchanges gases primarily with water across exposed or ventilated surfaces."
                                            },
                                            {
                                                "name": "operculum",
                                                "difference": "An operculum is a covering that protects the gills and can assist ventilation; it is not the gill exchange tissue."
                                            },
                                            {
                                                "name": "gill slit",
                                                "difference": "A gill slit is an opening associated with the passage of water; the gill is the respiratory organ."
                                            },
                                            {
                                                "name": "cutaneous respiration",
                                                "difference": "Cutaneous respiration uses the body skin as an exchange surface rather than a distinct gill organ."
                                            },
                                            {
                                                "name": "mushroom gill",
                                                "difference": "A mushroom gill is a spore-bearing plate beneath a fungal cap, not an animal respiratory organ."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of gill this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry intend the broad animal respiratory sense, and does an existing Vercy model already own that concept?",
                "Which authoritative comparative anatomy sources should establish boundaries among the different structures called gills?",
                "Which host-specific conventions define a countable gill and permit comparable measurements of surface extent?",
                "Which developmental baselines and secondary functions are supported for each included animal group?",
                "Which validated observations distinguish impaired gill exchange from normal variation, and what handling limits apply to each host?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 13,
                "questions": 21
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "organism",
            "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 gill, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise an animal gill, assess its respiratory condition in context, and identify appropriate observation or care actions.",
            "characteristics": {
                "substance": "living",
                "origin": "natural",
                "agency": "autonomous",
                "mobility": "self-moving"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: external gill, Fish gill.",
                "2 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 85 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 gill, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "a living thing",
            "physicalCharacter": [
                "Moves under its own power or of its own accord.",
                "Acts on its own behalf.",
                "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 diagnostic characters, and those differ by life stage - the young of many kinds are mistaken for other kinds entirely. A sighting is settled by characters, a photograph and a place, not by a name alone."
            ],
            "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": [
                        "external gill",
                        "Fish gill"
                    ]
                }
            ],
            "standing": "Described in 85 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one gill from another, and a gill 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 gill, 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 gill, 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 gill 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 gill, 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 gill, 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 gill 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 gill 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 gill, 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 gill, 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 gill 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 gill from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a gill, 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 gill, 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 gill 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 gill 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 gill, 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 gill, 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 gill 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": "Anatomy, parts and life stage.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and life stages",
                                        "description": "The parts of a gill and the stages it passes through.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a gill, 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 gill, 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 gill 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 gill is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a gill, 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 gill, 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 gill 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 gill is, how it got there and where it may go (self-moving).",
                        "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 gill is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a gill, 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 gill, 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 gill 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 gill moves on its own.",
                                "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 gill, 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 gill, 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 gill 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 gill 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 gill between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a gill, 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 gill, 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 gill 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 gill, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a gill 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 gill, 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 gill, 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 gill is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "taxonomic-placement",
                        "name": "Taxonomic placement and identification",
                        "description": "What gill is called scientifically, by whose authority, and how a specimen is recognised.",
                        "rationale": "Names change with revisions while the organism does not, so a name without its authority and date cannot be reconciled later.",
                        "layers": [
                            {
                                "id": "accepted-name",
                                "name": "Accepted name and synonymy",
                                "description": "The current binomial, its author and date, and the names it replaced.",
                                "findings": [
                                    {
                                        "id": "name-and-authority",
                                        "name": "Accepted name, authority and synonyms",
                                        "description": "What to record so a later revision can be applied without losing the old data.",
                                        "questions": [
                                            {
                                                "id": "name-and-authority-q01",
                                                "text": "What is the accepted scientific name of gill, with its author and year, and which synonyms does it absorb?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "name-and-authority-q02",
                                                "text": "Which taxonomic authority is being followed, and what would a competing authority say?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "field-identification",
                                "name": "Field identification",
                                "description": "The characters that separate gill from what it is confused with.",
                                "findings": [
                                    {
                                        "id": "diagnostic-characters",
                                        "name": "Diagnostic characters and confusable kinds",
                                        "description": "Features that settle an identification, and those that only suggest it.",
                                        "questions": [
                                            {
                                                "id": "diagnostic-characters-q01",
                                                "text": "Which observable characters distinguish gill from its closest look-alikes, and at which life stage are they visible?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "diagnostic-characters-q02",
                                                "text": "What evidence is enough to record an identification as confirmed rather than provisional?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "life-cycle-and-condition",
                        "name": "Life stages, condition and behaviour",
                        "description": "What gill does over its life and how its state is judged.",
                        "rationale": "Stage and condition change what may be done - handled, treated, harvested, left alone - and both are observations with a time.",
                        "layers": [
                            {
                                "id": "stages-and-reproduction",
                                "name": "Stages and reproduction",
                                "description": "Development from origin to death, including forms that look like different animals.",
                                "findings": [
                                    {
                                        "id": "life-stages",
                                        "name": "Life stages and their marks",
                                        "description": "The stages worth recording and what tells them apart.",
                                        "questions": [
                                            {
                                                "id": "life-stages-q01",
                                                "text": "What stages does gill pass through, and what observable change marks each transition?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "life-stages-q02",
                                                "text": "Which stages are so unlike the adult that they are mistaken for another kind?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "health-and-condition",
                                "name": "Health and condition",
                                "description": "How condition is assessed and by whom.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition assessment",
                                        "description": "Signs of health, injury and stress, and who is competent to judge them.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "How is the condition of gill judged, on what scale, and by whom?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "What condition obliges an agent to act, and what act is permitted to whom?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "range-and-status",
                        "name": "Habitat, range and conservation status",
                        "description": "Where gill lives and how threatened it is.",
                        "rationale": "Range and status govern what is lawful, and both are assessments with an assessor and a year rather than facts of nature.",
                        "layers": [
                            {
                                "id": "habitat-and-range",
                                "name": "Habitat and range",
                                "description": "Native range, introductions and the habitat it needs.",
                                "findings": [
                                    {
                                        "id": "range-record",
                                        "name": "Range, introductions and habitat",
                                        "description": "What to record about where it is found and how it got there.",
                                        "questions": [
                                            {
                                                "id": "range-record-q01",
                                                "text": "What is the native range of gill, where has it been introduced, and what habitat does it require?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "range-record-q02",
                                                "text": "What distinguishes a native record from an introduced or vagrant one?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "protection-status",
                                "name": "Protection and legal status",
                                "description": "Conservation assessments and the rules that follow from them.",
                                "findings": [
                                    {
                                        "id": "status-and-rules",
                                        "name": "Conservation status and legal consequence",
                                        "description": "The assessment, its date, and what it forbids or requires where.",
                                        "questions": [
                                            {
                                                "id": "status-and-rules-q01",
                                                "text": "What conservation status does gill hold, under which assessment and year?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "status-and-rules-q02",
                                                "text": "What does that status forbid or require of an agent, and in which jurisdiction?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a gill 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 gill and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a gill, 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 gill, 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 gill 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 gill is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a gill, 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 gill, 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 gill 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
            }
        }
    }
}