{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-13T01:10:31Z",
    "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": 3,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T10:00:00Z",
      "ingestedAt": "2026-10-06T07:04:07+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-Q13266730",
    "registryId": "vr.tr.c-segment",
    "name": "C-segment",
    "version": "0.2.0-wave.3",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q13266730/",
  "model": {
    "registry_id": "vr.tr.c-segment",
    "name": "C-segment",
    "purpose": "Let an agent explain the C-segment classification, identify typical models and body styles, relay market data and regulatory context, and distinguish it from adjacent segments and from other classification systems.",
    "definition": "A European car classification for compact or small family cars, between the B-segment superminis and the D-segment large family cars, typically about 4.2 to 4.6 metres long, exemplified by the Volkswagen Golf across its generations, the Ford Focus, Toyota Corolla, Peugeot 308 and Citroen DS4; the C-segment is one of the largest market segments in Europe and worldwide and includes hatchback, saloon, estate and crossover body styles.",
    "what_it_is_for": "Classifying compact family cars.",
    "affordances": [
      "explain the classification",
      "identify typical models",
      "relay market data",
      "distinguish from other segments"
    ],
    "distinguishing_features": [
      "Compact family size",
      "Golf-class benchmark",
      "Many body styles",
      "Informal European convention"
    ],
    "appearance": "Compact hatchbacks, saloons and estates about 4.2 to 4.6 metres long.",
    "visual_identification": [
      "European compact car segment",
      "Golf, Focus, Corolla, 308, DS4 and similar",
      "B-segment cars are smaller superminis; D-segment cars are larger family cars; US compact class overlaps but differs"
    ],
    "physical_properties": [
      {
        "quantity": "typical length",
        "typical_range": "about 4.2-4.6",
        "unit": "m",
        "note": ""
      },
      {
        "quantity": "share of European market",
        "typical_range": "about 20-25",
        "unit": "percent",
        "note": "varies by year"
      }
    ],
    "families_and_kinds": [
      "C-segment hatchbacks",
      "C-segment saloons and estates",
      "C-segment crossovers and SUVs",
      "premium C-segment cars",
      "specific models such as the Volkswagen Golf generations and Citroen DS4"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "car",
        "why": "in registry terms, as a class"
      },
      {
        "relation": "is exemplified by",
        "target": "Volkswagen Golf",
        "why": "the benchmark model"
      },
      {
        "relation": "is adjacent to",
        "target": "B-segment",
        "why": "the smaller class"
      },
      {
        "relation": "is adjacent to",
        "target": "D-segment",
        "why": "the larger class"
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "European Commission segment definitions used in market analysis",
      "Euro NCAP categories",
      "Emissions and safety rules applying by vehicle type"
    ],
    "failure_modes_and_hazards": [
      "Blurred boundaries between segments",
      "Confusing with other classification systems",
      "Stale model information"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Classify a car model into the segment and state the criteria used.",
        "Compare models within the segment on published specifications and test results."
      ],
      "must_not": [
        "Present segment placement as an official or legal classification.",
        "Quote safety or emissions ratings from a different generation or market version.",
        "Claim a model's rating applies to trims or markets it was not tested in.",
        "Present marketing copy as independent test results."
      ],
      "requires_human": [
        "Publishing comparisons used in fleet or procurement decisions."
      ]
    },
    "ethics": {
      "considerations": [
        "Buyers rely on class comparisons for safety and running cost decisions.",
        "Ratings differ by market, and mixing them up misleads people about crash protection."
      ],
      "affected_parties": [
        "Car buyers",
        "Fleet operators",
        "Other road users"
      ]
    },
    "owners": {
      "steward": "Nobody owns a market classification; manufacturers and testing bodies answer for the model data.",
      "master_systems": [
        "Type approval records of vehicle authorities"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q13266730: C-segment",
      "url": "https://www.wikidata.org/wiki/Q13266730",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: C-segment",
      "url": "https://en.wikipedia.org/wiki/C-segment",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "understand",
        "name": "Understand",
        "description": "What the C-segment is.",
        "rationale": "Definition.",
        "layers": [
          {
            "id": "definition",
            "name": "Definition",
            "description": "Definition and boundaries.",
            "findings": [
              {
                "id": "definition-finding",
                "name": "Definition",
                "description": "Definition.",
                "questions": [
                  {
                    "text": "What is the C-segment, and how is it bounded?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is the car C-segment, B-segment, D-segment or classified under another system?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "models",
            "name": "Models",
            "description": "Typical models.",
            "findings": [
              {
                "id": "models-finding",
                "name": "Models",
                "description": "Models.",
                "questions": [
                  {
                    "text": "Which models define the segment, from the Golf onward?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which entry fits the specific model?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "market",
        "name": "Market",
        "description": "Market.",
        "rationale": "Sources.",
        "layers": [
          {
            "id": "sales",
            "name": "Sales",
            "description": "Sales and trends.",
            "findings": [
              {
                "id": "sales-finding",
                "name": "Sales",
                "description": "Sales.",
                "questions": [
                  {
                    "text": "How large is the segment, and how is it changing with crossovers and electrification, with sources?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which sources are cited?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "brands",
            "name": "Brands",
            "description": "Brands and competition.",
            "findings": [
              {
                "id": "brands-finding",
                "name": "Brands",
                "description": "Brands.",
                "questions": [
                  {
                    "text": "Which manufacturers compete in the segment, and how?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the information current?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "evaluate",
        "name": "Evaluate",
        "description": "Comparison and regulation.",
        "rationale": "Attribution.",
        "layers": [
          {
            "id": "comparison",
            "name": "Comparison",
            "description": "Comparing cars.",
            "findings": [
              {
                "id": "comparison-finding",
                "name": "Comparison",
                "description": "Comparison.",
                "questions": [
                  {
                    "text": "What criteria do reviewers and consumer bodies use to compare C-segment cars, in general terms?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the user asking for a personal purchase recommendation, which needs current local information?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "regulation",
            "name": "Regulation",
            "description": "Safety and emissions.",
            "findings": [
              {
                "id": "regulation-finding",
                "name": "Regulation",
                "description": "Regulation.",
                "questions": [
                  {
                    "text": "How do safety ratings and emissions rules apply to C-segment cars?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "History and systems.",
        "rationale": "Context.",
        "layers": [
          {
            "id": "history",
            "name": "History",
            "description": "History.",
            "findings": [
              {
                "id": "history-finding",
                "name": "History",
                "description": "History.",
                "questions": [
                  {
                    "text": "How did the compact family car segment develop, from the Golf Mk1 onward?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits the history of the Volkswagen Golf?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "systems",
            "name": "Systems",
            "description": "Other classification systems.",
            "findings": [
              {
                "id": "systems-finding",
                "name": "Systems",
                "description": "Systems.",
                "questions": [
                  {
                    "text": "How do US, Japanese and other classifications compare with the European segments?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits car classification?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should compact car be the primary linked entry?",
    "How should market data be linked?",
    "The registry entry has merged aliases naming specific models; should they be split off?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}