{
    "model": {
        "rank": 5738,
        "code": "thing-q104698",
        "model_id": "vr.tr.mid-ocean-ridge",
        "name": "mid-ocean ridge",
        "purpose": "Enable an AI agent to recognise a mid-ocean ridge, assess its spreading and seafloor activity, and judge where observation, sampling or infrastructure interaction is appropriate.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.PLC",
        "industry": "",
        "version": "",
        "url": "/models/thing/q104698/",
        "tier": 2,
        "score": 65,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 65,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q104698",
                "url": "https://www.wikidata.org/wiki/Q104698",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T09:10:05Z",
                "providers": [
                    "Codex"
                ],
                "missingProviders": [
                    "Grok"
                ],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": null,
                        "turns": null,
                        "seconds": 9.2,
                        "error": "Error: Internal error: {\n  \"message\": \"API error (status 402 Payment Required): Grok Build usage balance exhausted\",\n  \"http_status\": 402\n}",
                        "retried": true
                    },
                    "codex": {
                        "seconds": 89.6,
                        "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: 01a07b20-6564-7913-87bf-aaca3f9212f3\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: mid-ocean ridge\nRegistry id: vr.tr.mid-ocean-ridge\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: ("
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q104698",
                "registryId": "vr.tr.mid-ocean-ridge",
                "name": "mid-ocean ridge",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q104698/",
            "model": {
                "registry_id": "vr.tr.mid-ocean-ridge",
                "name": "mid-ocean ridge",
                "purpose": "Enable an AI agent to recognise a mid-ocean ridge, assess its spreading and seafloor activity, and judge where observation, sampling or infrastructure interaction is appropriate.",
                "definition": "",
                "scope_statement": "This model owns the identity, spatial extent, segmentation, spreading behaviour, physical state and interaction constraints of the oceanic spreading-ridge feature registered as vr.tr.mid-ocean-ridge, with linked records for its constituent features and surrounding systems.",
                "in_scope": [
                    "Ridge-axis location, flanks, endpoints and uncertainty in mapped extent",
                    "Relationships between spreading segments, discontinuities and adjacent plates",
                    "Spreading direction, rate, history and evidence of oceanic lithosphere accretion",
                    "Axial morphology, faulting, magmatic activity and hydrothermal expression",
                    "Ridge-specific evidence coverage and conditions affecting surveys, sampling and seafloor installations"
                ],
                "out_of_scope": [
                    "Whole tectonic plates and their complete motion histories",
                    "Individual volcanoes, eruptions and earthquakes as independently managed entities",
                    "Individual hydrothermal vents, mineral deposits and biological communities",
                    "Ocean-basin circulation and water-column ecosystems beyond ridge interactions",
                    "Survey vehicles, instruments, cables and expedition operations",
                    "Legal jurisdictions, permits and protected areas as authoritative governance records"
                ],
                "distinguishing_features": [
                    "Require evidence connecting the feature to oceanic plate divergence and lithosphere accretion; an elongated submarine high alone does not establish a mid-ocean ridge. [NOAA](https://oceanexplorer.noaa.gov/ocean-fact/mid-ocean-ridge/)",
                    "Test whether crustal ages and magnetic patterns support spreading away from an axis, accounting for asymmetry and incomplete observations. [USGS](https://pubs.usgs.gov/gip/dynamic/developing.html)",
                    "Distinguish an accreting ridge segment from a transform connection, where plate motion is principally lateral rather than crust-producing. [USGS](https://pubs.usgs.gov/gip/dynamic/understanding.html)",
                    "Do not require a central rift valley: ridge morphology varies with spreading behaviour, including contrasting slow- and fast-spreading forms. [NOAA](https://oceanexplorer.noaa.gov/ocean-fact/mid-ocean-ridge/)",
                    "Do not use hydrothermal activity alone as identification evidence, because vents also occur in other tectonic settings. [NOAA](https://oceanservice.noaa.gov/facts/vents.html)"
                ],
                "characteristics": [
                    {
                        "name": "Mapped axis and extent",
                        "kind": "measurement",
                        "unit_or_values": "Coordinates with reference frame; axis length in km; positional uncertainty in m; mapping date",
                        "why_it_matters": "Locates the ridge and prevents observations outside the adopted extent from being attributed to it."
                    },
                    {
                        "name": "Segment topology",
                        "kind": "relation",
                        "unit_or_values": "Parent ridge, constituent segments, neighbouring segments and typed discontinuity links",
                        "why_it_matters": "Supports local assessment without treating the entire ridge as physically uniform."
                    },
                    {
                        "name": "Bounding plates",
                        "kind": "relation",
                        "unit_or_values": "Plate identifiers on each side, applicable segment and reconstruction interval",
                        "why_it_matters": "Establishes the kinematic context of spreading."
                    },
                    {
                        "name": "Spreading velocity",
                        "kind": "measurement",
                        "unit_or_values": "mm/year and azimuth in degrees; full or half rate explicitly identified; reference frame, interval and uncertainty",
                        "why_it_matters": "Allows valid comparisons between observations and separates plate separation from one-flank accretion."
                    },
                    {
                        "name": "Spreading status",
                        "kind": "state",
                        "unit_or_values": "Active, inferred active, disputed, interpreted extinct or unknown; evidence interval required",
                        "why_it_matters": "Separates geological interpretation from the presence or absence of a recently detected event."
                    },
                    {
                        "name": "Axial morphology",
                        "kind": "category",
                        "unit_or_values": "Axial valley, axial high, transitional, heterogeneous or unresolved; classification method recorded",
                        "why_it_matters": "Guides recognition and local survey planning without imposing one ridge shape."
                    },
                    {
                        "name": "Axial depth and relief",
                        "kind": "measurement",
                        "unit_or_values": "m relative to a stated vertical datum; spatial resolution and uncertainty",
                        "why_it_matters": "Constrains vehicle access, terrain clearance and interpretation of along-axis variation."
                    },
                    {
                        "name": "Magmatic and tectonic observations",
                        "kind": "state",
                        "unit_or_values": "Dated evidence of eruption, intrusion, deformation or seismicity; detection coverage and interpretation confidence",
                        "why_it_matters": "Supports activity assessment without treating inferred magma supply as directly observed."
                    },
                    {
                        "name": "Hydrothermal evidence",
                        "kind": "state",
                        "unit_or_values": "Located discharge, plume-only indication, historical evidence, surveyed nondetection or unsurveyed",
                        "why_it_matters": "Distinguishes a confirmed seafloor source from a water-column signal or missing observations."
                    },
                    {
                        "name": "Observation support",
                        "kind": "measurement",
                        "unit_or_values": "Survey footprint, date range, spatial resolution, detection limits and measurement uncertainty",
                        "why_it_matters": "Limits the spatial and temporal claims an agent can responsibly make."
                    },
                    {
                        "name": "Interaction constraints",
                        "kind": "relation",
                        "unit_or_values": "Links to hazards, sensitive sites, infrastructure and applicable access conditions, each with extent and validity date",
                        "why_it_matters": "Connects ridge conditions to a proposed action without inventing permission from physical accessibility."
                    }
                ],
                "affordances": [
                    "Identify or challenge a candidate ridge interpretation using tectonic, bathymetric and crustal-age evidence.",
                    "Divide an existing ridge record into assessment segments while preserving the registered thing's identity.",
                    "Compare spreading, morphology and activity across segments and observation intervals.",
                    "Prioritise bathymetric, seismic, magnetic or hydrothermal surveys where evidence is insufficient.",
                    "Screen proposed sampling sites, vehicle routes or cable crossings against local terrain, activity and linked constraints.",
                    "Update a ridge assessment after new observations while retaining competing interpretations and earlier evidence."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "ridge-identity-and-extent",
                        "name": "Ridge identity and extent",
                        "description": "Establish which oceanic spreading feature the record represents and where its assessment applies.",
                        "rationale": "A ridge name or bathymetric high alone cannot establish identity or a defensible footprint.",
                        "layers": [
                            {
                                "id": "spreading-feature-recognition",
                                "name": "Spreading feature recognition",
                                "description": "Evaluate evidence that the feature is an oceanic spreading ridge.",
                                "findings": [
                                    {
                                        "id": "ridge-identification-basis",
                                        "name": "Ridge identification basis",
                                        "description": "Record the supporting observations, alternative interpretations and confidence in classification.",
                                        "questions": [
                                            {
                                                "text": "Which observations connect this feature to oceanic divergence and lithosphere accretion?",
                                                "kind": "definition",
                                                "id": "ridge-identification-basis-q01"
                                            },
                                            {
                                                "text": "Which surveys or publications support the identification, and what alternatives do they leave unresolved?",
                                                "kind": "provenance",
                                                "id": "ridge-identification-basis-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "axis-flanks-and-limits",
                                "name": "Axis, flanks and limits",
                                "description": "Define the mapped feature and the limits of its ownership.",
                                "findings": [
                                    {
                                        "id": "adopted-ridge-footprint",
                                        "name": "Adopted ridge footprint",
                                        "description": "Record the axis trace, included flanks, endpoints and uncertainty without assuming a universal ridge width.",
                                        "questions": [
                                            {
                                                "text": "What criteria determine the axis, lateral limits and endpoints of this ridge record?",
                                                "kind": "boundary",
                                                "id": "adopted-ridge-footprint-q01"
                                            },
                                            {
                                                "text": "What coordinate frame, survey resolution and positional uncertainty apply to those limits?",
                                                "kind": "measurement",
                                                "id": "adopted-ridge-footprint-q02"
                                            },
                                            {
                                                "text": "Which neighbouring or constituent features are linked to this ridge rather than owned by it?",
                                                "kind": "boundary",
                                                "id": "adopted-ridge-footprint-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "segmentation-and-plate-kinematics",
                        "name": "Segmentation and plate kinematics",
                        "description": "Represent how ridge segments connect and how their bounding plates separate.",
                        "rationale": "Segment boundaries and local motion determine which spreading measurements can be compared or generalised.",
                        "layers": [
                            {
                                "id": "segment-connectivity",
                                "name": "Segment connectivity",
                                "description": "Locate segment boundaries and classify their connections.",
                                "findings": [
                                    {
                                        "id": "segment-and-discontinuity-network",
                                        "name": "Segment and discontinuity network",
                                        "description": "Record segment membership and interpreted transform or non-transform discontinuities.",
                                        "questions": [
                                            {
                                                "text": "Where are the segment boundaries, and what observations justify each boundary?",
                                                "kind": "boundary",
                                                "id": "segment-and-discontinuity-network-q01"
                                            },
                                            {
                                                "text": "Which offsets are interpreted as transform connections, non-transform discontinuities or unresolved structures?",
                                                "kind": "definition",
                                                "id": "segment-and-discontinuity-network-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "relative-motion-and-history",
                                "name": "Relative motion and history",
                                "description": "Describe separation across the axis at explicit locations and timescales.",
                                "findings": [
                                    {
                                        "id": "local-spreading-solution",
                                        "name": "Local spreading solution",
                                        "description": "Record plate assignments, relative velocity and evidence for changing or asymmetric spreading.",
                                        "questions": [
                                            {
                                                "text": "Which plates bound each segment during the interval being assessed?",
                                                "kind": "boundary",
                                                "id": "local-spreading-solution-q01"
                                            },
                                            {
                                                "text": "What spreading rate and direction apply, with full versus half rate, averaging interval and uncertainty stated?",
                                                "kind": "measurement",
                                                "id": "local-spreading-solution-q02"
                                            },
                                            {
                                                "text": "What evidence supports inferred asymmetry, axis migration or a change in spreading status?",
                                                "kind": "provenance",
                                                "id": "local-spreading-solution-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "axial-terrain-and-accretion",
                        "name": "Axial terrain and accretion",
                        "description": "Describe the ridge's seafloor form and the evidence for how extension and material addition are accommodated.",
                        "rationale": "Recognition, state assessment and physical access depend on local terrain and accretion style.",
                        "layers": [
                            {
                                "id": "ridge-morphology",
                                "name": "Ridge morphology",
                                "description": "Characterise axial and flank terrain at an explicit mapping scale.",
                                "findings": [
                                    {
                                        "id": "axial-terrain-character",
                                        "name": "Axial terrain character",
                                        "description": "Record valley or high morphology, depth, relief, slopes and mapped heterogeneity.",
                                        "questions": [
                                            {
                                                "text": "What axial form is observed, and where does that classification change along the ridge?",
                                                "kind": "definition",
                                                "id": "axial-terrain-character-q01"
                                            },
                                            {
                                                "text": "What depths, relief and slopes are resolved by the available bathymetry, using which datum and resolution?",
                                                "kind": "measurement",
                                                "id": "axial-terrain-character-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "magmatic-and-fault-accommodation",
                                "name": "Magmatic and fault accommodation",
                                "description": "Separate observed structures and materials from interpretations of accretion processes.",
                                "findings": [
                                    {
                                        "id": "accretion-style-evidence",
                                        "name": "Accretion style evidence",
                                        "description": "Record mapped volcanic surfaces, faults and sampled lithologies relevant to local extension.",
                                        "questions": [
                                            {
                                                "text": "Which observations constrain the roles of magmatic addition and fault displacement in this segment?",
                                                "kind": "provenance",
                                                "id": "accretion-style-evidence-q01"
                                            },
                                            {
                                                "text": "What measurements constrain fault displacement or crustal structure, and how uncertain are they?",
                                                "kind": "measurement",
                                                "id": "accretion-style-evidence-q02"
                                            },
                                            {
                                                "text": "How far beyond the mapped or sampled area can the accretion interpretation reasonably apply?",
                                                "kind": "boundary",
                                                "id": "accretion-style-evidence-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "ridge-activity-and-hydrothermal-expression",
                        "name": "Ridge activity and hydrothermal expression",
                        "description": "Assess dated volcanic, tectonic and hydrothermal signals without assuming that all segments share one state.",
                        "rationale": "A ridge's geological activity and its currently observed events operate on different timescales.",
                        "layers": [
                            {
                                "id": "volcanic-and-seismic-state",
                                "name": "Volcanic and seismic state",
                                "description": "Associate observed events with the ridge and bound conclusions about current activity.",
                                "findings": [
                                    {
                                        "id": "dated-activity-assessment",
                                        "name": "Dated activity assessment",
                                        "description": "Record event evidence, affected extent and the monitoring limits behind an activity assessment.",
                                        "questions": [
                                            {
                                                "text": "Which dated observations indicate eruption, intrusion, fault motion or seismic activity at this ridge?",
                                                "kind": "provenance",
                                                "id": "dated-activity-assessment-q01"
                                            },
                                            {
                                                "text": "What monitoring duration and detection limits constrain claims of recent activity or nondetection?",
                                                "kind": "measurement",
                                                "id": "dated-activity-assessment-q02"
                                            },
                                            {
                                                "text": "Which observed changes warrant reassessing planned seafloor operations?",
                                                "kind": "action",
                                                "id": "dated-activity-assessment-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "hydrothermal-source-assessment",
                                "name": "Hydrothermal source assessment",
                                "description": "Distinguish a located discharge site from indirect evidence transported through the water column.",
                                "findings": [
                                    {
                                        "id": "hydrothermal-evidence-attribution",
                                        "name": "Hydrothermal evidence attribution",
                                        "description": "Record whether observations establish a source, indicate a possible source or only constrain surveyed coverage.",
                                        "questions": [
                                            {
                                                "text": "Does the evidence locate seafloor discharge, detect a plume or report only historical activity?",
                                                "kind": "definition",
                                                "id": "hydrothermal-evidence-attribution-q01"
                                            },
                                            {
                                                "text": "What spatial uncertainty and water-current information constrain attribution of a plume to this segment?",
                                                "kind": "measurement",
                                                "id": "hydrothermal-evidence-attribution-q02"
                                            },
                                            {
                                                "text": "Which survey or sample records support the attribution and its observation date?",
                                                "kind": "provenance",
                                                "id": "hydrothermal-evidence-attribution-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "ridge-assessment-and-intervention",
                        "name": "Ridge assessment and intervention",
                        "description": "Translate ridge observations and their limits into defensible survey and interaction decisions.",
                        "rationale": "An agent must know whether available evidence supports a particular ridge crossing, sampling site or monitoring action.",
                        "layers": [
                            {
                                "id": "ridge-observation-sufficiency",
                                "name": "Ridge observation sufficiency",
                                "description": "Assess whether surveys adequately resolve the ridge segment and process relevant to a decision.",
                                "findings": [
                                    {
                                        "id": "decision-relevant-coverage",
                                        "name": "Decision-relevant coverage",
                                        "description": "Identify missing axial mapping, temporal monitoring or source-location evidence that limits an assessment.",
                                        "questions": [
                                            {
                                                "text": "Which parts of the proposed survey, sampling or crossing area lack sufficiently resolved bathymetry or activity observations?",
                                                "kind": "measurement",
                                                "id": "decision-relevant-coverage-q01"
                                            },
                                            {
                                                "text": "Which additional observations would most reduce uncertainty about the relevant ridge condition?",
                                                "kind": "action",
                                                "id": "decision-relevant-coverage-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "seafloor-interaction-conditions",
                                "name": "Seafloor interaction conditions",
                                "description": "Evaluate a proposed interaction against local ridge terrain, processes and externally maintained constraints.",
                                "findings": [
                                    {
                                        "id": "proposed-interaction-assessment",
                                        "name": "Proposed interaction assessment",
                                        "description": "Record the action footprint, ridge-specific exposure, linked restrictions and conditions for reassessment.",
                                        "questions": [
                                            {
                                                "text": "How do axial relief, faulted terrain, recent activity and located hydrothermal discharge affect the proposed route or site?",
                                                "kind": "action",
                                                "id": "proposed-interaction-assessment-q01"
                                            },
                                            {
                                                "text": "Which linked sensitive-site, infrastructure or access records overlap the proposed interaction footprint?",
                                                "kind": "boundary",
                                                "id": "proposed-interaction-assessment-q02"
                                            },
                                            {
                                                "text": "What missing evidence or observed change requires deferring, relocating or reassessing the action?",
                                                "kind": "action",
                                                "id": "proposed-interaction-assessment-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry intend this type to include extinct spreading ridges, or should those features be represented through a neighbouring type with a historical relationship?",
                "What membership rule should cover back-arc spreading centres, incipient oceanic rifts and emergent portions of oceanic ridges?",
                "What defensible lateral boundary distinguishes ridge flanks from the surrounding oceanic plate at different assessment scales?",
                "Which published segmentation and spreading-rate classification conventions should be adopted when authoritative sources disagree?",
                "What observation coverage and timescale are sufficient to assign spreading or activity states without confusing nondetection with inactivity?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 10,
                "findings": 10,
                "questions": 26
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "place or geographic feature",
            "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 mid-ocean ridge, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a mid-ocean ridge, assess its spreading and seafloor activity, and judge where observation, sampling or infrastructure interaction is appropriate.",
            "characteristics": {
                "substance": "place",
                "origin": "natural",
                "agency": "inert",
                "mobility": "fixed",
                "scale": "geographic"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "entered, crossed or travelled along"
            ],
            "distinguishingFeatures": [
                "Described in 65 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 mid-ocean ridge, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "a portion of the world with an extent",
            "physicalCharacter": [
                "On the scale of a landscape, measured in kilometres.",
                "Stays where it was put; moving it is a project.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state",
                "enter it, cross it, travel along it"
            ],
            "howItIsRecognised": [
                "Recognised by extent on the ground and by position, not by appearance. Two places that look alike are told apart by where they are."
            ],
            "relatedModels": [],
            "standing": "Described in 65 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one mid-ocean ridge from another, and a mid-ocean ridge 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 mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge 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 mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge 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 at geographic scale.",
                                "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 mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a mid-ocean ridge is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge is, how it got there and where it may go (fixed).",
                        "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 mid-ocean ridge is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge 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 mid-ocean ridge between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a mid-ocean ridge 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 mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a mid-ocean ridge and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a mid-ocean ridge is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a mid-ocean ridge performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a mid-ocean ridge, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a mid-ocean ridge, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a mid-ocean ridge is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a mid-ocean ridge.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a mid-ocean ridge at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a mid-ocean ridge, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a mid-ocean ridge, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a mid-ocean ridge is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "extent-and-geometry",
                        "name": "Extent, geometry and naming",
                        "description": "Where mid-ocean ridge is, how far it reaches, and what it is called.",
                        "rationale": "A boundary is claimed by an authority rather than observed in the world, so the claimant belongs in the record with the geometry.",
                        "layers": [
                            {
                                "id": "geometry",
                                "name": "Geometry and reference system",
                                "description": "Coordinates, extent and the frame they are given in.",
                                "findings": [
                                    {
                                        "id": "geometry-record",
                                        "name": "Geometry, precision and frame",
                                        "description": "What is recorded about position and shape, and to what accuracy.",
                                        "questions": [
                                            {
                                                "id": "geometry-record-q01",
                                                "text": "What geometry describes mid-ocean ridge, in which coordinate reference system, at what precision?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "geometry-record-q02",
                                                "text": "Which authority publishes that geometry, and who publishes a different one?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "names",
                                "name": "Names and endonyms",
                                "description": "What it is called in different languages and by different parties.",
                                "findings": [
                                    {
                                        "id": "naming-record",
                                        "name": "Names and who uses them",
                                        "description": "Official names, local names and contested names.",
                                        "questions": [
                                            {
                                                "id": "naming-record-q01",
                                                "text": "By what names is mid-ocean ridge known, in which languages, and which are official to whom?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "naming-record-q02",
                                                "text": "Where naming is contested, what should an agent record instead of choosing?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "containment-and-access",
                        "name": "Containment, jurisdiction and access",
                        "description": "What mid-ocean ridge sits inside, who governs it, and who may enter.",
                        "rationale": "Administrative containment decides which rules apply, and it changes without the place moving.",
                        "layers": [
                            {
                                "id": "containment",
                                "name": "Administrative containment",
                                "description": "The units it belongs to and the date each holds from.",
                                "findings": [
                                    {
                                        "id": "containment-record",
                                        "name": "Containing units and effective dates",
                                        "description": "Where it sits administratively and since when.",
                                        "questions": [
                                            {
                                                "id": "containment-record-q01",
                                                "text": "Which administrative units contain mid-ocean ridge, and since when does each containment hold?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "containment-record-q02",
                                                "text": "Which containment is disputed, and by which parties?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "access",
                                "name": "Access and permitted use",
                                "description": "Who may enter or use it and under what conditions.",
                                "findings": [
                                    {
                                        "id": "access-rules",
                                        "name": "Access rules and their source",
                                        "description": "Entry, use and restriction, with the rule behind each.",
                                        "questions": [
                                            {
                                                "id": "access-rules-q01",
                                                "text": "Who may enter or use mid-ocean ridge, under what conditions, and by whose rule?",
                                                "kind": "action"
                                            },
                                            {
                                                "id": "access-rules-q02",
                                                "text": "What seasonal or conditional closure applies, and how is it announced?",
                                                "kind": "definition"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a mid-ocean ridge 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 mid-ocean ridge and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge 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 mid-ocean ridge is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a mid-ocean ridge, 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 mid-ocean ridge, 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 mid-ocean ridge is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 8,
                "layers": 17,
                "findings": 19,
                "questions": 53
            }
        }
    }
}