{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-10-21T19:05:29Z",
    "providers": [
      "Claude"
    ],
    "breadth": "researched by Claude against the sources listed below",
    "pass": 2,
    "wave": 5,
    "engine": "claude",
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-21T19:14:22+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1053463",
    "registryId": "vr.tr.census-geographic-unit-of-canada",
    "name": "census geographic unit of Canada",
    "version": "0.2.0-wave.5",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.PLC"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1053463/",
  "model": {
    "registry_id": "vr.tr.census-geographic-unit-of-canada",
    "name": "census geographic unit of Canada",
    "purpose": "Let an agent identify a Canadian census geographic unit by type, code and census year, relate it to other units, and use the right unit for statistics.",
    "definition": "Any of the geographic areas that Statistics Canada defines in its Standard Geographical Classification and census geography to collect and publish census data, such as census divisions, census subdivisions, census metropolitan areas, census agglomerations, population centres and dissemination areas.",
    "what_it_is_for": "Organising the collection and publication of census and other statistics for places in Canada.",
    "affordances": [
      "name the type and code of a census unit",
      "find the units that contain or overlap a place",
      "explain thresholds such as those for census metropolitan areas",
      "retrieve census data for a unit from Statistics Canada"
    ],
    "distinguishing_features": [
      "Statistical areas, not necessarily legal municipalities, though census subdivisions often match municipalities.",
      "Boundaries and codes are tied to a census year.",
      "Some units nest in a hierarchy; others, such as population centres, cut across it."
    ],
    "appearance": null,
    "visual_identification": [
      "Shown as boundaries on Statistics Canada maps and boundary files"
    ],
    "physical_properties": [],
    "families_and_kinds": [
      "province and territory",
      "census division",
      "census subdivision",
      "census metropolitan area",
      "census agglomeration",
      "census tract",
      "population centre",
      "dissemination area",
      "aggregate dissemination area",
      "dissemination block",
      "designated place",
      "economic region",
      "federal electoral district"
    ],
    "related_models": [
      {
        "relation": "is part of",
        "target": "Canadian census",
        "why": "the census geography"
      },
      {
        "relation": "is defined by",
        "target": "Statistics Canada",
        "why": "the national statistical office"
      },
      {
        "relation": "is confused with",
        "target": "municipality",
        "why": "a legal local government"
      },
      {
        "relation": "may contain",
        "target": "dissemination area",
        "why": "depending on the unit type"
      }
    ],
    "identifiers": [
      {
        "scheme": "Standard Geographical Classification code",
        "value_or_pattern": "province (2) + census division (2) + census subdivision (3)",
        "note": "for SGC units"
      },
      {
        "scheme": "DGUID",
        "value_or_pattern": "10-21 characters: vintage (4), type (1), schema (4), unique identifier",
        "note": "used by Statistics Canada before 2021; structure documented in 2019"
      }
    ],
    "standards_and_regulation": [
      "Standard Geographical Classification (SGC) of Statistics Canada",
      "Statistics Act of Canada"
    ],
    "failure_modes_and_hazards": [
      "Comparing data across census years with changed boundaries",
      "Mistaking a census unit for a legal municipality"
    ],
    "agent_conduct": {
      "may": [
        "identify units and retrieve published statistics",
        "explain definitions"
      ],
      "must_not": [
        "mix boundaries from different census years without saying so",
        "invent codes",
        "attempt to identify individuals from small-area data"
      ],
      "requires_human": []
    },
    "ethics": {
      "considerations": [
        "confidentiality of census respondents",
        "accurate representation of communities"
      ],
      "affected_parties": [
        "residents of the areas",
        "users of census data"
      ]
    },
    "owners": {
      "steward": "Statistics Canada",
      "master_systems": [
        "Statistics Canada census geography files and the Standard Geographical Classification"
      ]
    },
    "facets_not_applicable": {
      "properties": "Statistical areas: size and population belong to individual units and census years."
    },
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": []
  },
  "sources": [
    {
      "id": "SRC-001",
      "title": "Q1053463",
      "publisher": "Wikidata",
      "url": "https://www.wikidata.org/wiki/Q1053463",
      "what_it_supports": "identity of the registry item, labels and sitelinks",
      "url_status": "live"
    },
    {
      "id": "SRC-002",
      "title": "Standard Geographical Classification (SGC) 2021 - Introduction",
      "publisher": "Statistics Canada",
      "url": "https://www.statcan.gc.ca/en/subjects/standard/sgc/2021/introduction",
      "what_it_supports": "SGC units and codes",
      "url_status": "blocked"
    },
    {
      "id": "SRC-003",
      "title": "Dissemination Geography Unique Identifier: Definition and Structure",
      "publisher": "Statistics Canada",
      "url": "https://www150.statcan.gc.ca/n1/pub/92f0138m/92f0138m2019001-eng.htm",
      "what_it_supports": "DGUID structure",
      "url_status": "live"
    },
    {
      "id": "SRC-004",
      "title": "Dictionary, Census of Population, 2021",
      "publisher": "Statistics Canada",
      "url": "https://www12.statcan.gc.ca/census-recensement/2021/ref/dict/98-301-x2021001-eng.pdf",
      "what_it_supports": "definitions of census geographic units",
      "url_status": "blocked"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "unit",
        "name": "Unit",
        "description": "Which unit it is.",
        "rationale": "Type, code and year identify a unit.",
        "layers": [
          {
            "id": "type",
            "name": "Type",
            "description": "Division, subdivision, metropolitan area and others.",
            "findings": [
              {
                "id": "unit-type",
                "name": "Unit type",
                "description": "Type and definition.",
                "questions": [
                  {
                    "text": "Which type of census unit is this?",
                    "kind": "definition"
                  },
                  {
                    "text": "How is that type defined?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "code-and-year",
            "name": "Code and year",
            "description": "Identifier, scheme and geographic vintage; geographic reference date kept apart from Census Day.",
            "findings": [
              {
                "id": "code",
                "name": "Code",
                "description": "SGC code or DGUID and its census year.",
                "questions": [
                  {
                    "text": "What is the unit's code?",
                    "kind": "provenance"
                  },
                  {
                    "text": "For which census year is it valid?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "hierarchy",
        "name": "Hierarchy",
        "description": "How units relate.",
        "rationale": "Statistics depend on the right containment.",
        "layers": [
          {
            "id": "nesting",
            "name": "Nesting",
            "description": "Containing and contained units.",
            "findings": [
              {
                "id": "containment",
                "name": "Containment",
                "description": "Parents and children.",
                "questions": [
                  {
                    "text": "Which units contain this one?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which units does it contain?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "alternative-hierarchies",
            "name": "Alternative hierarchies",
            "description": "Overlaps and relationships without exact nesting.",
            "findings": [
              {
                "id": "overlap",
                "name": "Overlap",
                "description": "Population centres and metropolitan areas.",
                "questions": [
                  {
                    "text": "Which population centre or metropolitan area overlaps it?",
                    "kind": "definition"
                  },
                  {
                    "text": "Does it cross provincial boundaries?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "delineation",
        "name": "Delineation",
        "description": "How boundaries are drawn.",
        "rationale": "Rules explain why units change.",
        "layers": [
          {
            "id": "criteria",
            "name": "Criteria",
            "description": "Population and commuting thresholds.",
            "findings": [
              {
                "id": "thresholds",
                "name": "Thresholds",
                "description": "Population, density and commuting rules.",
                "questions": [
                  {
                    "text": "Which thresholds define this unit type?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Did the unit meet them in this census?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          },
          {
            "id": "change",
            "name": "Change",
            "description": "Boundary changes between censuses.",
            "findings": [
              {
                "id": "boundary-change",
                "name": "Boundary change",
                "description": "What changed and why.",
                "questions": [
                  {
                    "text": "Did the boundary change since the last census?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is a correspondence file available?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "data",
        "name": "Data",
        "description": "Statistics for the unit.",
        "rationale": "Users want the numbers.",
        "layers": [
          {
            "id": "census-data",
            "name": "Census data",
            "description": "Profiles and tables.",
            "findings": [
              {
                "id": "data-product",
                "name": "Data product",
                "description": "Table, census year, variables.",
                "questions": [
                  {
                    "text": "Which data product gives this statistic?",
                    "kind": "provenance"
                  },
                  {
                    "text": "What is the population of the unit?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          },
          {
            "id": "confidentiality",
            "name": "Confidentiality",
            "description": "Suppression and rounding.",
            "findings": [
              {
                "id": "disclosure-control",
                "name": "Disclosure control",
                "description": "Rounding and suppression rules.",
                "questions": [
                  {
                    "text": "Are values rounded or suppressed for confidentiality?",
                    "kind": "boundary"
                  },
                  {
                    "text": "How reliable are small-area values?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should each unit type, such as census metropolitan area, have its own entry?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}