{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-10-22T11:03:41Z",
    "providers": [
      "Claude"
    ],
    "breadth": "researched by Claude against the sources listed below",
    "pass": 2,
    "wave": 5,
    "engine": "claude",
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-22T11:35:01+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "8 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q2921357",
    "registryId": "vr.tr.subway-entrance",
    "name": "subway entrance",
    "version": "0.2.0-wave.5",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.BLT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q2921357/",
  "model": {
    "registry_id": "vr.tr.subway-entrance",
    "name": "subway entrance",
    "purpose": "Let an agent describe subway entrances, their design, accessibility and identification, from transit authority sources.",
    "definition": "A structure at street level giving access to an underground railway (metro or subway) station, usually by stairs, escalators or lifts, often marked with the system's sign and sometimes housed in a kiosk or building.",
    "what_it_is_for": "Access between the street and underground stations.",
    "affordances": [
      "explain types and features",
      "explain accessibility features",
      "point to transit authority data on entrances",
      "describe notable designs"
    ],
    "distinguishing_features": [
      "Many stations have several entrances, each with its own identifier.",
      "Accessibility varies: some entrances have lifts, many only stairs.",
      "Some entrances are heritage-listed, such as the Art Nouveau Guimard entrances in Paris."
    ],
    "appearance": "A stairway or escalator opening at street level, with signage and sometimes a canopy or kiosk.",
    "visual_identification": [
      "Stairs down from the pavement with a metro sign, such as the Paris Metro Guimard entrances"
    ],
    "physical_properties": [],
    "families_and_kinds": [
      "stair entrance",
      "escalator entrance",
      "lift (elevator) entrance",
      "entrance within a building",
      "kiosk entrance"
    ],
    "related_models": [
      {
        "relation": "is part of",
        "target": "metro station",
        "why": "station"
      },
      {
        "relation": "is related to",
        "target": "rapid transit",
        "why": "system"
      },
      {
        "relation": "is related to",
        "target": "accessibility",
        "why": "design"
      },
      {
        "relation": "is mapped in",
        "target": "GTFS",
        "why": "data format"
      }
    ],
    "identifiers": [
      {
        "scheme": "GTFS stop_id (location_type 2)",
        "value_or_pattern": "unique within its feed; requires parent_station",
        "note": "keep the feed identity; pathways.txt links entrances to platforms"
      },
      {
        "scheme": "OpenStreetMap railway=subway_entrance",
        "value_or_pattern": "",
        "note": "map tag"
      }
    ],
    "standards_and_regulation": [
      "Accessibility law (such as the ADA in the US and EU accessibility rules)",
      "Fire safety and egress codes such as NFPA 130"
    ],
    "failure_modes_and_hazards": [
      "Flooding of stations through entrances",
      "Crowding and falls on stairs"
    ],
    "agent_conduct": {
      "may": [
        "describe entrances and point to data"
      ],
      "must_not": [
        "give security-sensitive details"
      ],
      "requires_human": []
    },
    "ethics": {
      "considerations": [
        "accessibility"
      ],
      "affected_parties": [
        "passengers",
        "people with disabilities"
      ]
    },
    "owners": {
      "steward": "the transit authority operating the station",
      "master_systems": [
        "transit agency GTFS feeds"
      ]
    },
    "facets_not_applicable": {
      "properties": "Dimensions vary per entrance and are recorded in transit data."
    },
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": []
  },
  "sources": [
    {
      "id": "SRC-001",
      "title": "Q2921357",
      "publisher": "Wikidata",
      "url": "https://www.wikidata.org/wiki/Q2921357",
      "what_it_supports": "identity of the registry item, labels and sitelinks",
      "url_status": "live"
    },
    {
      "id": "SRC-002",
      "title": "Metro station",
      "publisher": "Wikipedia",
      "url": "https://en.wikipedia.org/wiki/Metro_station",
      "what_it_supports": "stations and entrances",
      "url_status": "live"
    },
    {
      "id": "SRC-003",
      "title": "General Transit Feed Specification Reference",
      "publisher": "MobilityData / GTFS",
      "url": "https://gtfs.org/documentation/schedule/reference/",
      "what_it_supports": "Entrance records, dataset-scoped identifiers, parent stations and internal pathways.",
      "url_status": "live"
    },
    {
      "id": "SRC-004",
      "title": "MTA Accessible Stations",
      "publisher": "Metropolitan Transportation Authority",
      "url": "https://www.mta.info/accessibility/stations",
      "what_it_supports": "Entrance locations, elevators, ramps and platform-specific accessibility.",
      "url_status": "live"
    },
    {
      "id": "SRC-005",
      "title": "Tag:railway=subway_entrance",
      "publisher": "OpenStreetMap",
      "url": "https://wiki.openstreetmap.org/wiki/Tag%3Arailway%3Dsubway_entrance",
      "what_it_supports": "Meaning and use of the cited mapping tag.",
      "url_status": "live"
    },
    {
      "id": "SRC-006",
      "title": "Metro entrance heritage record PA00086784",
      "publisher": "French Ministry of Culture",
      "url": "https://pop.culture.gouv.fr/notice/merimee/PA00086784",
      "what_it_supports": "Guimard metro entrance design and protected heritage status.",
      "url_status": "live"
    },
    {
      "id": "SRC-007",
      "title": "NFPA 130 - Standard for Fixed Guideway Transit and Passenger Rail Systems",
      "publisher": "National Fire Protection Association",
      "url": "https://www.nfpa.org/codes-and-standards/nfpa-130-standard-development/130?tab=2",
      "what_it_supports": "Standard identity and fire protection and life safety scope.",
      "url_status": "live"
    },
    {
      "id": "SRC-008",
      "title": "ADA Accessibility Standards",
      "publisher": "U.S. Access Board",
      "url": "https://www.access-board.gov/guidelines-and-standards/buildings-and-sites/about-the-ada-standards/ada-standards/",
      "what_it_supports": "Accessible entrances, routes and transportation facilities.",
      "url_status": "live"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "entrance",
        "name": "Entrance",
        "description": "Which entrance.",
        "rationale": "Identity first.",
        "layers": [
          {
            "id": "identity",
            "name": "Identity",
            "description": "Station and code.",
            "findings": [
              {
                "id": "entrance",
                "name": "Entrance",
                "description": "Station and identifier.",
                "questions": [
                  {
                    "text": "Which station?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entrance identifier?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "location",
            "name": "Location",
            "description": "Street.",
            "findings": [
              {
                "id": "location",
                "name": "Location",
                "description": "Address and coordinates.",
                "questions": [
                  {
                    "text": "Where is it?",
                    "kind": "provenance"
                  },
                  {
                    "text": "From which data?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "access",
        "name": "Access",
        "description": "Accessibility.",
        "rationale": "Access varies.",
        "layers": [
          {
            "id": "means",
            "name": "Means",
            "description": "Stairs, escalator, lift.",
            "findings": [
              {
                "id": "means",
                "name": "Means",
                "description": "Stairs, escalator or lift; step-free to concourse, platform and train; lines, platforms and directions reached.",
                "questions": [
                  {
                    "text": "Is there step-free access?",
                    "kind": "boundary"
                  },
                  {
                    "text": "Is the lift working?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "hours",
            "name": "Hours",
            "description": "Opening.",
            "findings": [
              {
                "id": "hours",
                "name": "Hours",
                "description": "Times.",
                "questions": [
                  {
                    "text": "When is it open?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Per the operator?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "design",
        "name": "Design",
        "description": "Architecture.",
        "rationale": "Designs can be notable.",
        "layers": [
          {
            "id": "design",
            "name": "Design",
            "description": "Style.",
            "findings": [
              {
                "id": "design",
                "name": "Design",
                "description": "Architect and date.",
                "questions": [
                  {
                    "text": "Who designed it?",
                    "kind": "provenance"
                  },
                  {
                    "text": "When?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "heritage",
            "name": "Heritage",
            "description": "Listing.",
            "findings": [
              {
                "id": "heritage",
                "name": "Heritage",
                "description": "Status.",
                "questions": [
                  {
                    "text": "Is it listed?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Since when?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "safety",
        "name": "Safety",
        "description": "Risks.",
        "rationale": "Entrances need protection.",
        "layers": [
          {
            "id": "flooding",
            "name": "Flooding",
            "description": "Flood barriers.",
            "findings": [
              {
                "id": "flood-protection",
                "name": "Flood protection",
                "description": "Measure.",
                "questions": [
                  {
                    "text": "Which flood barriers exist?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Per which plan?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "crowding",
            "name": "Crowding",
            "description": "Capacity.",
            "findings": [
              {
                "id": "capacity",
                "name": "Capacity",
                "description": "Value.",
                "questions": [
                  {
                    "text": "What is the capacity?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Per which code?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}