{
    "card": {
        "schema": "https://ver.cy/schemas/card/1.0.0",
        "id": "vr.tr.crossing-tower",
        "code": "thing-q50363006",
        "url": "https://ver.cy/models/thing/q50363006/",
        "name": "crossing tower",
        "alternateNames": [],
        "kind": "thing",
        "status": "draft-generated",
        "version": "vr.draft.v3",
        "language": "en",
        "classifiers": {
            "family": "Thing Registry",
            "category": "Physical world and living systems",
            "entryKind": "building, structure or infrastructure",
            "plane": "PHY",
            "domain": [
                "PHY.BLT"
            ],
            "industry": [],
            "navPath": "",
            "tags": [],
            "facets": []
        },
        "whatItIs": "A physical thing registered under PHY.BLT. The registry names it; this draft has not been given a definition yet.",
        "purpose": "Give an agent a durable, checkable way to recognise a crossing tower, record what state it is in, and decide what may be done with it.",
        "scope": {
            "in": [],
            "out": [],
            "boundaries": []
        },
        "distinguishingFeatures": [
            "Described in 4 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
        ],
        "structure": {
            "bundles": [
                {
                    "id": "identity-and-classification",
                    "name": "Identity, naming and classification",
                    "description": "How an agent tells one crossing tower from another, and a crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower from the things most often confused with it.",
                                    "questions": [
                                        {
                                            "id": "distinguishing-features-q01",
                                            "text": "What identifies and describes what distinguishes a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 built 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower is built from and which parts are replaceable.",
                                    "questions": [
                                        {
                                            "id": "parts-and-materials-q01",
                                            "text": "What identifies and describes the composition of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower is judged and by whom.",
                                    "questions": [
                                        {
                                            "id": "condition-assessment-q01",
                                            "text": "What identifies and describes the condition of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower is, and what that position is measured against.",
                                    "questions": [
                                        {
                                            "id": "position-and-frame-q01",
                                            "text": "What identifies and describes the location of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower between them.",
                                    "questions": [
                                        {
                                            "id": "stages-and-transitions-q01",
                                            "text": "What identifies and describes the lifecycle of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower, how often and by whom.",
                            "findings": [
                                {
                                    "id": "observation-record",
                                    "name": "Observation record",
                                    "description": "How an observation of a crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower is for, and what it is used for anyway.",
                            "findings": [
                                {
                                    "id": "function-and-purpose",
                                    "name": "Function, purpose and misuse",
                                    "description": "The function a crossing tower performs and the uses that fall outside it.",
                                    "questions": [
                                        {
                                            "id": "function-and-purpose-q01",
                                            "text": "What identifies and describes the use of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower.",
                            "findings": [
                                {
                                    "id": "procedures-and-skills",
                                    "name": "Procedures, skills and required tools",
                                    "description": "What an agent needs before it can act on a crossing tower at all.",
                                    "questions": [
                                        {
                                            "id": "procedures-and-skills-q01",
                                            "text": "What identifies and describes handling a crossing tower, 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 crossing tower, 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 crossing tower is known, and what must it refuse?",
                                            "kind": "action",
                                            "answer_data": [
                                                "permitted actions",
                                                "preconditions",
                                                "refusals",
                                                "escalation"
                                            ]
                                        }
                                    ]
                                }
                            ]
                        }
                    ]
                },
                {
                    "id": "structure-and-capacity",
                    "name": "Structure, materials and capacity",
                    "description": "How crossing tower is built and how much it can take.",
                    "rationale": "Capacity and structural type govern what may lawfully happen inside or on it, and both are attested rather than obvious.",
                    "layers": [
                        {
                            "id": "construction",
                            "name": "Construction and materials",
                            "description": "Structural type, materials and principal dimensions.",
                            "findings": [
                                {
                                    "id": "construction-record",
                                    "name": "Structural type and dimensions",
                                    "description": "What it is made of and how big it is.",
                                    "questions": [
                                        {
                                            "id": "construction-record-q01",
                                            "text": "What structural type and materials characterise crossing tower, and what are its principal dimensions?",
                                            "kind": "measurement"
                                        },
                                        {
                                            "id": "construction-record-q02",
                                            "text": "What in that construction limits how it may be altered?",
                                            "kind": "boundary"
                                        }
                                    ]
                                }
                            ]
                        },
                        {
                            "id": "capacity-and-load",
                            "name": "Capacity and load",
                            "description": "Occupancy, load ratings and their basis.",
                            "findings": [
                                {
                                    "id": "capacity-record",
                                    "name": "Rated capacity and who set it",
                                    "description": "The limits and the authority that certified them.",
                                    "questions": [
                                        {
                                            "id": "capacity-record-q01",
                                            "text": "What capacity or load is crossing tower rated for, under which code, certified by whom?",
                                            "kind": "provenance"
                                        },
                                        {
                                            "id": "capacity-record-q02",
                                            "text": "What must an agent refuse to permit beyond that rating?",
                                            "kind": "action"
                                        }
                                    ]
                                }
                            ]
                        }
                    ]
                },
                {
                    "id": "tenure-and-condition",
                    "name": "Ownership, permitting and condition",
                    "description": "Who holds crossing tower, what it is permitted for, and what state it is in.",
                    "rationale": "A structure is not the organisation that uses it, and its permission to exist is separate from its condition.",
                    "layers": [
                        {
                            "id": "tenure",
                            "name": "Ownership and permission",
                            "description": "Title, occupancy and the permits in force.",
                            "findings": [
                                {
                                    "id": "tenure-record",
                                    "name": "Title, occupier and permits",
                                    "description": "Who owns, who occupies, and what is permitted.",
                                    "questions": [
                                        {
                                            "id": "tenure-record-q01",
                                            "text": "Who owns and who occupies crossing tower, and which permits or consents are in force?",
                                            "kind": "definition"
                                        },
                                        {
                                            "id": "tenure-record-q02",
                                            "text": "What distinguishes the structure from the organisation that operates in it?",
                                            "kind": "boundary"
                                        }
                                    ]
                                }
                            ]
                        },
                        {
                            "id": "inspection",
                            "name": "Condition and inspection",
                            "description": "Inspection regime, defects and remaining service life.",
                            "findings": [
                                {
                                    "id": "inspection-record",
                                    "name": "Inspections and defects",
                                    "description": "What is inspected, how often, and what was found.",
                                    "questions": [
                                        {
                                            "id": "inspection-record-q01",
                                            "text": "What inspection regime applies to crossing tower, at what interval, and by whom?",
                                            "kind": "provenance"
                                        },
                                        {
                                            "id": "inspection-record-q02",
                                            "text": "What finding takes it out of service, and who may authorise its return?",
                                            "kind": "action"
                                        }
                                    ]
                                }
                            ]
                        }
                    ]
                },
                {
                    "id": "provenance-and-evidence",
                    "name": "Provenance, evidence and time",
                    "description": "Where every claim about a crossing tower 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 crossing tower and how confident it is.",
                                    "questions": [
                                        {
                                            "id": "claim-provenance-q01",
                                            "text": "What identifies and describes a claim about a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower is retired without being erased.",
                                    "questions": [
                                        {
                                            "id": "validity-and-supersession-q01",
                                            "text": "What identifies and describes the validity of a claim about a crossing tower, 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 crossing tower, 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 crossing tower is known, and what must it refuse?",
                                            "kind": "action",
                                            "answer_data": [
                                                "permitted actions",
                                                "preconditions",
                                                "refusals",
                                                "escalation"
                                            ]
                                        }
                                    ]
                                }
                            ]
                        }
                    ]
                }
            ]
        },
        "agentConduct": {
            "may": [
                "observe it, measure it, record its state",
                "enter it, cross it, travel along it"
            ],
            "mustNot": [],
            "requiresHuman": []
        },
        "ethics": {
            "considerations": [],
            "affectedParties": []
        },
        "owners": {
            "steward": "",
            "roles": [],
            "masterSystems": []
        },
        "relations": [],
        "interaction": {
            "identity": {
                "applicability": "required",
                "items": []
            },
            "properties": {
                "applicability": "required",
                "items": [
                    "Made of: matter you can touch",
                    "On the scale of a building: sited rather than moved.",
                    "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."
                ]
            },
            "recognition": {
                "applicability": "required",
                "items": [
                    "Recognised by form, materials and siting, and confirmed by address or by a register entry rather than by looking."
                ]
            },
            "capabilities": {
                "applicability": "required",
                "items": [
                    "observed and measured",
                    "entered, crossed or travelled along"
                ]
            },
            "hazards": {
                "applicability": "required",
                "items": []
            },
            "interfaces": {
                "applicability": "required",
                "items": []
            },
            "context": {
                "applicability": "required",
                "items": [
                    "Described in 4 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is."
                ]
            }
        },
        "sources": [],
        "openQuestions": [
            "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 crossing tower, and on what evidence are they told apart?",
            "What may an agent decide or do once the name of a crossing tower is known, and what must it refuse?",
            "What may an agent decide or do once an identifier for a crossing tower is known, and what must it refuse?",
            "What may an agent decide or do once the kind of a crossing tower is known, and what must it refuse?"
        ],
        "resources": {
            "spec": "/models/thing/q50363006/?format=json"
        },
        "provenance": {
            "origin": "thing registry, generated draft (pass 1)",
            "builtFrom": [
                "models/draft_model.php",
                "wikidata"
            ],
            "providers": [
                "vr.draft.v3"
            ],
            "researchStatus": "not researched",
            "generatedAt": "",
            "builder": "models/card_draft.php"
        },
        "completeness": {
            "sections": {
                "classifiers": "filled",
                "whatItIs": "derived",
                "purpose": "derived",
                "distinguishingFeatures": "derived",
                "structure": "derived",
                "agentConduct": "derived",
                "ethics": "missing",
                "owners": "missing",
                "relations": "missing",
                "interaction.identity": "missing",
                "interaction.properties": "derived",
                "interaction.recognition": "derived",
                "interaction.capabilities": "derived",
                "interaction.hazards": "missing",
                "interaction.interfaces": "missing",
                "interaction.context": "derived",
                "sources": "missing"
            },
            "notes": {
                "_": "Generated by rule from registry facets. No source was read; every derived section awaits the research pass."
            },
            "score": 0.324
        }
    },
    "model": {
        "rank": 96819,
        "code": "thing-q50363006",
        "model_id": "vr.tr.crossing-tower",
        "name": "crossing tower",
        "purpose": "",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "draft-generated",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.BLT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q50363006/",
        "tier": 2,
        "score": 4,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 4,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q50363006",
                "url": "https://www.wikidata.org/wiki/Q50363006",
                "license": "CC0 1.0"
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "building, structure or infrastructure",
            "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 crossing tower, record what state it is in, and decide what may be done with it.",
            "whatItIs": "A physical thing registered under PHY.BLT. The registry names it; this draft has not been given a definition yet.",
            "characteristics": {
                "substance": "material",
                "origin": "manufactured",
                "agency": "inert",
                "mobility": "fixed",
                "scale": "built"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "entered, crossed or travelled along"
            ],
            "distinguishingFeatures": [
                "Described in 4 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 crossing tower, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "On the scale of a building: sited rather than moved.",
                "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 form, materials and siting, and confirmed by address or by a register entry rather than by looking."
            ],
            "relatedModels": [],
            "standing": "Described in 4 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 crossing tower from another, and a crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 built 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a crossing tower 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 crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower 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 crossing tower is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a crossing tower performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a crossing tower at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a crossing tower, 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 crossing tower, 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 crossing tower is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "structure-and-capacity",
                        "name": "Structure, materials and capacity",
                        "description": "How crossing tower is built and how much it can take.",
                        "rationale": "Capacity and structural type govern what may lawfully happen inside or on it, and both are attested rather than obvious.",
                        "layers": [
                            {
                                "id": "construction",
                                "name": "Construction and materials",
                                "description": "Structural type, materials and principal dimensions.",
                                "findings": [
                                    {
                                        "id": "construction-record",
                                        "name": "Structural type and dimensions",
                                        "description": "What it is made of and how big it is.",
                                        "questions": [
                                            {
                                                "id": "construction-record-q01",
                                                "text": "What structural type and materials characterise crossing tower, and what are its principal dimensions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "construction-record-q02",
                                                "text": "What in that construction limits how it may be altered?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "capacity-and-load",
                                "name": "Capacity and load",
                                "description": "Occupancy, load ratings and their basis.",
                                "findings": [
                                    {
                                        "id": "capacity-record",
                                        "name": "Rated capacity and who set it",
                                        "description": "The limits and the authority that certified them.",
                                        "questions": [
                                            {
                                                "id": "capacity-record-q01",
                                                "text": "What capacity or load is crossing tower rated for, under which code, certified by whom?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "capacity-record-q02",
                                                "text": "What must an agent refuse to permit beyond that rating?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "tenure-and-condition",
                        "name": "Ownership, permitting and condition",
                        "description": "Who holds crossing tower, what it is permitted for, and what state it is in.",
                        "rationale": "A structure is not the organisation that uses it, and its permission to exist is separate from its condition.",
                        "layers": [
                            {
                                "id": "tenure",
                                "name": "Ownership and permission",
                                "description": "Title, occupancy and the permits in force.",
                                "findings": [
                                    {
                                        "id": "tenure-record",
                                        "name": "Title, occupier and permits",
                                        "description": "Who owns, who occupies, and what is permitted.",
                                        "questions": [
                                            {
                                                "id": "tenure-record-q01",
                                                "text": "Who owns and who occupies crossing tower, and which permits or consents are in force?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "tenure-record-q02",
                                                "text": "What distinguishes the structure from the organisation that operates in it?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "inspection",
                                "name": "Condition and inspection",
                                "description": "Inspection regime, defects and remaining service life.",
                                "findings": [
                                    {
                                        "id": "inspection-record",
                                        "name": "Inspections and defects",
                                        "description": "What is inspected, how often, and what was found.",
                                        "questions": [
                                            {
                                                "id": "inspection-record-q01",
                                                "text": "What inspection regime applies to crossing tower, at what interval, and by whom?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "inspection-record-q02",
                                                "text": "What finding takes it out of service, and who may authorise its return?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a crossing tower 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 crossing tower and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a crossing tower, 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 crossing tower, 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 crossing tower 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 crossing tower is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a crossing tower, 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 crossing tower, 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 crossing tower 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
            }
        }
    }
}