{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-14T02:52:00Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 4,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T11:00:00Z",
      "ingestedAt": "2026-10-06T07:45:28+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:51:54+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1315918",
    "registryId": "vr.tr.a-frame-building",
    "name": "A-frame building",
    "version": "0.2.0-wave.4",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.BLT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1315918/",
  "model": {
    "registry_id": "vr.tr.a-frame-building",
    "name": "A-frame building",
    "purpose": "Let an agent explain A-frame buildings, relay their form, history, advantages and drawbacks from architecture sources, and distinguish them from gable-roofed houses, chalets, teepees and geodesic domes.",
    "definition": "A building with steeply sloping sides that meet at the top to form the shape of the letter A, so that the roof reaches almost to the ground and doubles as the walls, a form used for chalets, cabins, churches and houses and popular for mid-twentieth-century holiday homes because it sheds snow and is simple to build; A-frames offer a striking open interior but have limited usable space near the sloping walls and can be hard to insulate and ventilate, considerations for design and comfort.",
    "what_it_is_for": "A distinctive triangular-profile building.",
    "affordances": [
      "explain the form",
      "relay history",
      "relay advantages and drawbacks",
      "distinguish related structures"
    ],
    "distinguishing_features": [
      "Triangular profile",
      "Roof as walls",
      "Sheds snow",
      "Limited edge space"
    ],
    "appearance": "A building shaped like a triangle or the letter A, with a roof reaching to the ground.",
    "visual_identification": [
      "Building with an A-shaped triangular profile",
      "A-frame building, A-frame house",
      "Gable-roofed houses have vertical walls; chalets have wide eaves; teepees are conical tents; geodesic domes are spherical"
    ],
    "physical_properties": [
      {
        "quantity": "roof",
        "typical_range": "reaches near the ground",
        "unit": "note",
        "note": "doubles as walls"
      },
      {
        "quantity": "popularity",
        "typical_range": "mid-20th-century holiday homes",
        "unit": "note",
        "note": ""
      },
      {
        "quantity": "registry parent",
        "typical_range": "building",
        "unit": "note",
        "note": ""
      }
    ],
    "families_and_kinds": [
      "A-frame cabins",
      "A-frame houses",
      "A-frame churches"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "building",
        "why": "in registry terms"
      },
      {
        "relation": "is contrasted with",
        "target": "gable roof house",
        "why": ""
      },
      {
        "relation": "is contrasted with",
        "target": "chalet",
        "why": ""
      },
      {
        "relation": "is contrasted with",
        "target": "geodesic dome",
        "why": ""
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "Building codes for structure, insulation and ventilation"
    ],
    "failure_modes_and_hazards": [
      "Poor insulation and ventilation if not designed well",
      "Limited usable space",
      "Condensation issues"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Describe A-frame buildings and their history.",
        "Report snow load, roof and window condition for an owner who has asked."
      ],
      "must_not": [
        "Present a building as safe or available without the owner's information.",
        "Advise structural changes without an engineer.",
        "Ignore snow and fire risks in steep timber roofs.",
        "Direct people onto steep roofs without fall protection."
      ],
      "requires_human": [
        "Structural alterations or use changes."
      ]
    },
    "ethics": {
      "considerations": [
        "Holiday homes affect local housing.",
        "Steep roofs pose fall risks to workers."
      ],
      "affected_parties": [
        "Occupants",
        "Roof workers",
        "Neighbours"
      ]
    },
    "owners": {
      "steward": "The owner of the property; the land registry records title.",
      "master_systems": [
        "Land registry or cadastre"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q1315918: A-frame building",
      "url": "https://www.wikidata.org/wiki/Q1315918",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: A-frame building",
      "url": "https://en.wikipedia.org/wiki/A-frame_building",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "understand",
        "name": "Understand",
        "description": "What an A-frame building is.",
        "rationale": "Definition.",
        "layers": [
          {
            "id": "definition",
            "name": "Definition",
            "description": "Definition.",
            "findings": [
              {
                "id": "definition-finding",
                "name": "Definition",
                "description": "Definition.",
                "questions": [
                  {
                    "text": "What is an A-frame building, and how does it differ from gable-roofed houses, chalets, teepees and geodesic domes?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is someone building or insulating an A-frame, where ventilation and insulation need care?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "uses",
            "name": "Uses",
            "description": "Uses.",
            "findings": [
              {
                "id": "uses-finding",
                "name": "Uses",
                "description": "Uses.",
                "questions": [
                  {
                    "text": "What are A-frame cabins, houses and churches?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which entry fits the specific use?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "design",
        "name": "Design",
        "description": "Design.",
        "rationale": "Sources.",
        "layers": [
          {
            "id": "structure",
            "name": "Structure",
            "description": "Structure.",
            "findings": [
              {
                "id": "structure-finding",
                "name": "Structure",
                "description": "Structure.",
                "questions": [
                  {
                    "text": "How does the A-frame use its roof as walls?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "tradeoffs",
            "name": "Trade-offs",
            "description": "Advantages and drawbacks.",
            "findings": [
              {
                "id": "tradeoffs-finding",
                "name": "Trade-offs",
                "description": "Trade-offs.",
                "questions": [
                  {
                    "text": "What are the space, snow-shedding and insulation trade-offs?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which sources are cited?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "history",
        "name": "History",
        "description": "History.",
        "rationale": "Sources.",
        "layers": [
          {
            "id": "revival",
            "name": "Revival",
            "description": "Mid-century revival.",
            "findings": [
              {
                "id": "revival-finding",
                "name": "Revival",
                "description": "Revival.",
                "questions": [
                  {
                    "text": "Why did A-frames become popular holiday homes in the mid-twentieth century?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the information accurate?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "modern",
            "name": "Modern",
            "description": "Modern A-frames.",
            "findings": [
              {
                "id": "modern-finding",
                "name": "Modern",
                "description": "Modern.",
                "questions": [
                  {
                    "text": "How are A-frames used in modern architecture?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the presentation neutral and attributed?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "Comfort.",
        "rationale": "Regulation.",
        "layers": [
          {
            "id": "insulation",
            "name": "Insulation",
            "description": "Insulation and ventilation.",
            "findings": [
              {
                "id": "insulation-finding",
                "name": "Insulation",
                "description": "Insulation.",
                "questions": [
                  {
                    "text": "Why can A-frames be hard to insulate and ventilate?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits thermal insulation?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "space",
            "name": "Space",
            "description": "Usable space.",
            "findings": [
              {
                "id": "space-finding",
                "name": "Space",
                "description": "Space.",
                "questions": [
                  {
                    "text": "How is usable space limited near the sloping walls?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the information current?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should A-frame cabins be a separate entry?",
    "How should the mid-century revival be documented?",
    "How should modern A-frame design be linked?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}