{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T11:42:36Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 24.3,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0956b-eed8-75e2-9ad3-1a4e7351ec60\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: NUTS statistical regions of Bulgaria\nSense to describe: (none recorded)\nDomain code: PHY.PLC\nAlso known as: (none)\n\n\nContext for this batch of 1001 thin",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 82.3,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0956b-eed0-7c71-85a4-e937f402d50c\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: NUTS statistical regions of Bulgaria\nRegistry id: vr.tr.nuts-statistical-regions-of-bulgaria\nPlane / domain: PHY / PHY.PLC\nRegistry definition: (none"
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:43:04+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "standards_and_regulation"
      ]
    },
    "revisions": [
      {
        "at": "2026-10-07T11:08:37+00:00",
        "engine": "codex",
        "fields": [
          "agent_conduct",
          "definition",
          "distinguishing_features",
          "ethics",
          "failure_modes_and_hazards",
          "in_scope",
          "out_of_scope",
          "owners",
          "purpose",
          "scope_statement"
        ],
        "answering_review": "4486b9bc3902bb7520922e514143d838213a502dc7ff108b83dc6cc0aa67d305"
      }
    ],
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T12:16:28+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1337565",
    "registryId": "vr.tr.nuts-statistical-regions-of-bulgaria",
    "name": "NUTS statistical regions of Bulgaria",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.PLC"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1337565/",
  "model": {
    "registry_id": "vr.tr.nuts-statistical-regions-of-bulgaria",
    "name": "NUTS statistical regions of Bulgaria",
    "purpose": "Enable an agent to identify, describe and assess the Wikimedia list article, distinguish its revisions from classification editions, and trace its regional listings to authoritative references.",
    "definition": "A Wikimedia list article presenting Bulgaria's statistical regions within the European Union's hierarchical Nomenclature of Territorial Units for Statistics, a classification used for comparable regional statistics and regional policy.",
    "scope_statement": "This model owns the Wikimedia list article represented by vr.tr.nuts-statistical-regions-of-bulgaria, including its page identity, revision history, organisation, listed content and citations; the statistical classification is the article's subject.",
    "in_scope": [
      "The article's page identity, title and revision history are included.",
      "The article's presentation of Bulgarian NUTS 1, NUTS 2 and NUTS 3 units is included.",
      "Names, codes, transliterations and aliases reported in the article are included.",
      "The article's descriptions of territorial coverage and administrative correspondence are included.",
      "Citations and statements identifying the classification editions represented in the article are included."
    ],
    "out_of_scope": [
      "Establishing or maintaining the official NUTS classification is outside this article model.",
      "Bulgaria's sovereignty and national government are outside this article model.",
      "Administrative powers and operations of provinces and municipalities are outside this article model.",
      "Independently maintained regional datasets and authoritative boundary files are outside this article model.",
      "EU funding eligibility decisions and programme administration are outside this article model.",
      "Cadastral parcels, property rights and surveyed legal boundaries are outside this article model."
    ],
    "distinguishing_features": [
      "The referent is a Wikimedia list article with a page identity and revision history.",
      "The article describes a nested statistical classification rather than constituting that classification or an administrative authority.",
      "An article revision and a NUTS classification edition are distinct references.",
      "Regional names, codes and administrative correspondences are reported article content whose authority depends on supporting sources.",
      "The article may summarise classification changes without itself approving or implementing them."
    ],
    "characteristics": [
      {
        "name": "Classification identity",
        "kind": "category",
        "unit_or_values": "Official NUTS code paired with edition",
        "why_it_matters": "Prevents a regional identifier from silently acquiring the territory of a different edition."
      },
      {
        "name": "Territorial level",
        "kind": "category",
        "unit_or_values": "NUTS 1 | NUTS 2 | NUTS 3",
        "why_it_matters": "Determines the regional scale at which membership and statistical comparisons are evaluated."
      },
      {
        "name": "Application status",
        "kind": "state",
        "unit_or_values": "Announced | adopted | applicable for specified use | superseded; dated and source-qualified",
        "why_it_matters": "Distinguishes an approved future classification from the geography required by a particular statistical release."
      },
      {
        "name": "Official regional names",
        "kind": "category",
        "unit_or_values": "Bulgarian Cyrillic name, official Latin rendering, language-tagged aliases",
        "why_it_matters": "Supports reliable recognition across Bulgarian and international sources."
      },
      {
        "name": "Hierarchical membership",
        "kind": "relation",
        "unit_or_values": "Edition-specific parent and child NUTS units",
        "why_it_matters": "Allows valid regional aggregation without mixing territorial editions."
      },
      {
        "name": "Administrative correspondence",
        "kind": "relation",
        "unit_or_values": "Exact match | aggregation | partial overlap | unresolved, with dated administrative identifiers",
        "why_it_matters": "Connects national territorial records to statistical regions without assuming identical institutional roles."
      },
      {
        "name": "Boundary representation",
        "kind": "relation",
        "unit_or_values": "Geometry linked to publisher, edition, release, coordinate reference system and generalisation scale",
        "why_it_matters": "Makes spatial assignment reproducible and exposes limitations near boundaries."
      },
      {
        "name": "Territorial area",
        "kind": "measurement",
        "unit_or_values": "km², with land or total-area convention, reference date and calculation method",
        "why_it_matters": "Supports extent checks and density calculations without treating differently derived areas as interchangeable."
      },
      {
        "name": "Edition correspondence",
        "kind": "relation",
        "unit_or_values": "Unchanged | renamed | recoded | merged | split | territory transferred; potentially multiple relationships",
        "why_it_matters": "Determines whether historical observations can be compared directly or require reconstruction."
      }
    ],
    "affordances": [
      "Resolve a Bulgarian regional name or code to the correct NUTS edition and level.",
      "Assign a location or administrative unit to a statistical region using a suitable dated boundary or correspondence table.",
      "Traverse the Bulgarian NUTS hierarchy and check whether selected units form a complete regional partition.",
      "Join regional observations after checking classification edition, geographic coverage and reference period.",
      "Trace regional changes and identify where time series need official backcasting or explicit estimation.",
      "Produce attributed regional maps with declared boundary edition, projection and spatial limitations."
    ],
    "agent_conduct": {
      "may": [
        "Summarise the article's regional listings while identifying the article revision and any stated classification edition.",
        "Compare the article's codes, boundaries and administrative correspondences with cited official sources."
      ],
      "must_not": [
        "Present the article as the authority that establishes Bulgaria's NUTS classification.",
        "Treat a listed NUTS region as an elected government with its own powers.",
        "Mix article revisions or classification editions without saying so.",
        "Use regional figures to stigmatize minority communities living in particular regions."
      ],
      "requires_human": [
        "Resolving contested article claims or proposed editorial changes that require community judgment.",
        "Using figures reported by the article to allocate cohesion funds or services."
      ]
    },
    "ethics": {
      "considerations": [
        "Inaccurate or outdated regional listings can mislead readers and analyses that reuse the article.",
        "Regional statistics reported or linked by the article can be misused to target ethnic minorities."
      ],
      "affected_parties": [
        "Readers and contributors are affected by the article's accuracy.",
        "Residents and regional authorities can be affected by reuse of its content.",
        "Minority communities can be harmed by stigmatizing interpretations."
      ]
    },
    "owners": {
      "steward": "The volunteer editorial community maintaining the list article under its host project's editorial policies.",
      "master_systems": [
        "The hosting wiki's page records and revision history identify and track the article."
      ]
    },
    "failure_modes_and_hazards": [
      "Confusing article revisions with classification editions can produce wrong regional comparisons.",
      "Treating the article as the authoritative classification can propagate outdated or unsupported entries."
    ],
    "standards_and_regulation": [
      "Regulation (EC) No 1059/2003 on the establishment of a common classification of territorial units for statistics (NUTS), European Parliament and Council of the European Union."
    ],
    "what_it_is_for": [
      "Bulgaria's NUTS regions are used to organize regional statistics and comparisons within the European Union.",
      "They are encountered in statistical tables, regional policy analysis and maps, where the classification edition determines which territorial units apply."
    ],
    "facets_not_applicable": {
      "recognition": "These statistical units have no inherent visible boundaries, so identification requires classification codes and an edition-specific territorial reference."
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q1337565: NUTS statistical regions of Bulgaria",
      "url": "https://www.wikidata.org/wiki/Q1337565",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: NUTS statistical regions of Bulgaria",
      "url": "https://en.wikipedia.org/wiki/NUTS_statistical_regions_of_Bulgaria",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "bulgarian-region-identity",
        "name": "Bulgarian region identity",
        "description": "Recognition of individual Bulgarian statistical units within the registered regional system.",
        "rationale": "Names and codes must identify a territorial unit in an edition before an agent can attach observations or boundaries.",
        "layers": [
          {
            "id": "codes-and-levels",
            "name": "Codes and levels",
            "description": "Official membership in Bulgaria's NUTS classification.",
            "findings": [
              {
                "id": "edition-qualified-unit",
                "name": "Edition-qualified unit",
                "description": "Record the official code, level and classification edition together, retaining the source entry used to establish identity.",
                "questions": [
                  {
                    "text": "Which official Bulgarian NUTS entry establishes this unit's code and level in the selected edition?",
                    "kind": "provenance",
                    "id": "edition-qualified-unit-q01"
                  },
                  {
                    "text": "Does the supplied identifier represent a territorial region, the country reference or a special statistical allocation?",
                    "kind": "definition",
                    "id": "edition-qualified-unit-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "bulgarian-names-and-aliases",
            "name": "Bulgarian names and aliases",
            "description": "Recognition across Cyrillic, Latin renderings and similar place names.",
            "findings": [
              {
                "id": "name-disambiguation",
                "name": "Name disambiguation",
                "description": "Retain authoritative names separately from search aliases, and require explicit territorial identification when a label such as Sofia could be ambiguous.",
                "questions": [
                  {
                    "text": "What Bulgarian Cyrillic name and Latin rendering does the edition's official list provide?",
                    "kind": "provenance",
                    "id": "name-disambiguation-q01"
                  },
                  {
                    "text": "Could this label refer to a settlement, an administrative territory or a different statistical unit?",
                    "kind": "boundary",
                    "id": "name-disambiguation-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "hierarchy-and-national-correspondence",
        "name": "Hierarchy and national correspondence",
        "description": "The composition of Bulgaria's statistical regions and their relationship to national territorial units.",
        "rationale": "Regional membership must be established from the selected classification rather than inferred from proximity or familiar administrative names.",
        "layers": [
          {
            "id": "regional-composition",
            "name": "Regional composition",
            "description": "Parent-child membership and edition-specific completeness.",
            "findings": [
              {
                "id": "published-hierarchy",
                "name": "Published hierarchy",
                "description": "Treat regional counts and composition as edition-specific. NSI describes Bulgaria's NUTS 2027 structure as one NUTS 1 region, four NUTS 2 regions and 28 NUTS 3 regions. [NSI classification](https://www.nsi.bg/en/pages/classification-of-territorial-units-for-statistics-in-bulgaria-nuts-61)",
                "questions": [
                  {
                    "text": "Which children belong to each Bulgarian parent region in the requested edition?",
                    "kind": "boundary",
                    "id": "published-hierarchy-q01"
                  },
                  {
                    "text": "Does the assembled hierarchy reproduce the official membership and counts without duplicates or omissions?",
                    "kind": "measurement",
                    "id": "published-hierarchy-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "administrative-unit-links",
            "name": "Administrative unit links",
            "description": "Connections to provinces, municipalities and national territorial identifiers.",
            "findings": [
              {
                "id": "dated-national-crosswalk",
                "name": "Dated national crosswalk",
                "description": "Record the evidence for each administrative correspondence and its validity period; preserve the distinction between a statistical grouping and an administrative institution.",
                "questions": [
                  {
                    "text": "Which official correspondence links this region to Bulgarian administrative units or EKATTE identifiers?",
                    "kind": "provenance",
                    "id": "dated-national-crosswalk-q01"
                  },
                  {
                    "text": "Is the relationship an exact territorial match, an aggregation or a partial overlap at the relevant date?",
                    "kind": "boundary",
                    "id": "dated-national-crosswalk-q02"
                  },
                  {
                    "text": "Can the requested administrative records be assigned directly, or does the correspondence require additional evidence?",
                    "kind": "action",
                    "id": "dated-national-crosswalk-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "territorial-representation",
        "name": "Territorial representation",
        "description": "Geographic extent and the evidence supporting a usable representation of Bulgarian statistical boundaries.",
        "rationale": "A classification's territorial definition and a downloaded polygon are related evidence with different precision and publication histories.",
        "layers": [
          {
            "id": "boundary-authority-and-release",
            "name": "Boundary authority and release",
            "description": "Traceability from a Bulgarian region to a specific geographic dataset.",
            "findings": [
              {
                "id": "traceable-region-geometry",
                "name": "Traceable region geometry",
                "description": "Associate each geometry with its classification edition and publisher's release metadata. GISCO distributes NUTS datasets by edition with metadata and release notes. [GISCO NUTS distribution](https://gisco-services.ec.europa.eu/distribution/v2/nuts/)",
                "questions": [
                  {
                    "text": "Which NSI or GISCO release supplies the polygon, and which NUTS edition does it represent?",
                    "kind": "provenance",
                    "id": "traceable-region-geometry-q01"
                  },
                  {
                    "text": "Does the polygon express the publisher's statistical boundary representation or a separately established legal boundary?",
                    "kind": "boundary",
                    "id": "traceable-region-geometry-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "spatial-fitness",
            "name": "Spatial fitness",
            "description": "Suitability of regional geometry for mapping, assignment and area calculations.",
            "findings": [
              {
                "id": "scale-aware-spatial-use",
                "name": "Scale-aware spatial use",
                "description": "Evaluate the coordinate reference system, generalisation, topology and area convention before using Bulgarian regional polygons for spatial decisions.",
                "questions": [
                  {
                    "text": "What coordinate reference system and generalisation scale govern this boundary representation?",
                    "kind": "measurement",
                    "id": "scale-aware-spatial-use-q01"
                  },
                  {
                    "text": "Do gaps, overlaps or coastline conventions affect the requested location assignment or area calculation?",
                    "kind": "boundary",
                    "id": "scale-aware-spatial-use-q02"
                  },
                  {
                    "text": "Should a location near a regional boundary be resolved through a finer authoritative dataset or an administrative crosswalk?",
                    "kind": "action",
                    "id": "scale-aware-spatial-use-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "classification-transition",
        "name": "Classification transition",
        "description": "Authority, timing and territorial continuity across Bulgarian NUTS editions.",
        "rationale": "The transition to NUTS 2027 makes an undated claim about the current Bulgarian regions particularly unreliable.",
        "layers": [
          {
            "id": "approval-and-application",
            "name": "Approval and application",
            "description": "Separate legal adoption, national implementation and statistical application dates.",
            "findings": [
              {
                "id": "use-specific-effective-date",
                "name": "Use-specific effective date",
                "description": "Record which date controls each use. NSI reports national approval of NUTS 2027 in February 2026, while Eurostat gives 1 January 2027 as the classification's validity start. [NSI classification](https://www.nsi.bg/en/pages/classification-of-territorial-units-for-statistics-in-bulgaria-nuts-61) [Eurostat overview](https://ec.europa.eu/eurostat/web/nuts)",
                "questions": [
                  {
                    "text": "Which regulation, national order and statistical guidance establish the relevant transition dates?",
                    "kind": "provenance",
                    "id": "use-specific-effective-date-q01"
                  },
                  {
                    "text": "Which edition does the intended statistical release or mapping task require on its reference date?",
                    "kind": "action",
                    "id": "use-specific-effective-date-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "territorial-lineage",
            "name": "Territorial lineage",
            "description": "Changes in codes, names and constituent territories between editions.",
            "findings": [
              {
                "id": "change-specific-correspondence",
                "name": "Change-specific correspondence",
                "description": "Represent predecessor-successor relationships through documented membership changes, distinguishing recoding from actual changes in territorial extent.",
                "questions": [
                  {
                    "text": "Which official correspondence establishes the predecessor and successor units for each affected Bulgarian region?",
                    "kind": "provenance",
                    "id": "change-specific-correspondence-q01"
                  },
                  {
                    "text": "Did the change alter only the name or code, or did constituent territories move between regions?",
                    "kind": "boundary",
                    "id": "change-specific-correspondence-q02"
                  },
                  {
                    "text": "Can observations be transferred exactly, or must the agent obtain finer data or an explicitly estimated allocation?",
                    "kind": "action",
                    "id": "change-specific-correspondence-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "regional-statistical-use",
        "name": "Regional statistical use",
        "description": "Conditions under which Bulgarian NUTS units support defensible data joins, aggregation and policy references.",
        "rationale": "Matching a regional label does not by itself establish comparable observations or eligibility for a programme.",
        "layers": [
          {
            "id": "observation-compatibility",
            "name": "Observation compatibility",
            "description": "Alignment of geographic editions, reference periods and coverage before analysis.",
            "findings": [
              {
                "id": "geography-qualified-observations",
                "name": "Geography-qualified observations",
                "description": "Require each linked statistical series to declare its territorial edition independently of its observation year, including any retrospective recalculation.",
                "questions": [
                  {
                    "text": "Which NUTS edition underlies the series, including historical observations republished on newer boundaries?",
                    "kind": "provenance",
                    "id": "geography-qualified-observations-q01"
                  },
                  {
                    "text": "Are special allocations, missing values or coverage differences excluded from the regional totals?",
                    "kind": "boundary",
                    "id": "geography-qualified-observations-q02"
                  },
                  {
                    "text": "Can the observations be aggregated directly, or do rates and averages require compatible denominators?",
                    "kind": "action",
                    "id": "geography-qualified-observations-q03"
                  }
                ]
              }
            ]
          },
          {
            "id": "comparison-and-policy-reference",
            "name": "Comparison and policy reference",
            "description": "Limits on interpreting regional comparisons and policy classifications.",
            "findings": [
              {
                "id": "supported-regional-conclusions",
                "name": "Supported regional conclusions",
                "description": "Keep territorial comparability separate from substantive regional performance and programme decisions; require the relevant programme source before attaching eligibility to a Bulgarian NUTS region.",
                "questions": [
                  {
                    "text": "Could a reported change in regional performance result from changed territorial composition rather than changed conditions?",
                    "kind": "measurement",
                    "id": "supported-regional-conclusions-q01"
                  },
                  {
                    "text": "Which programme decision, period and NUTS edition support any claimed funding eligibility?",
                    "kind": "provenance",
                    "id": "supported-regional-conclusions-q02"
                  },
                  {
                    "text": "Should the requested comparison proceed, be reconstructed on common boundaries or remain unresolved?",
                    "kind": "action",
                    "id": "supported-regional-conclusions-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "evidence-and-external-alignment",
        "name": "Evidence and external alignment",
        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
        "layers": [
          {
            "id": "reported-evidence",
            "name": "Reported evidence",
            "description": "Findings from the breadth pass, kept separate from the structural claims.",
            "findings": [
              {
                "id": "evidence-confidence-notes",
                "name": "Check these first",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "This is recalled knowledge; no sources were consulted.",
                  "Check the applicable NUTS edition before asserting current region counts, names, codes or boundaries.",
                  "Boundary geometry, coordinate reference systems and territorial correspondence tables require a specified authoritative dataset and release."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-kinds",
                "name": "Kinds and varieties",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "NUTS 1: major socio-economic regions",
                  "NUTS 2: basic regions for regional policy",
                  "NUTS 3: small regions for specific diagnoses"
                ],
                "questions": [
                  {
                    "id": "evidence-kinds-q01",
                    "text": "Which of these kinds and varieties hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-identifiers",
                "name": "Identifiers and schemes",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "scheme": "Eurostat NUTS codes",
                    "value_or_pattern": "BG followed by one digit for NUTS 1, two for NUTS 2, or three for NUTS 3",
                    "note": "Codes identify units within a particular edition of the classification; retain the edition when linking statistics or boundaries."
                  },
                  {
                    "scheme": "ISO 3166-1 alpha-2",
                    "value_or_pattern": "BG",
                    "note": "Identifies Bulgaria as a country, not an individual statistical region."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-identifiers-q01",
                    "text": "Which of these identifiers and schemes hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-standards-and-regulation",
                "name": "Standards and regulation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Regulation (EC) No 1059/2003 of the European Parliament and of the Council establishes the common classification of territorial units for statistics (NUTS).",
                  "European Commission amendments to the NUTS classification specify successive editions and their territorial units."
                ],
                "questions": [
                  {
                    "id": "evidence-standards-and-regulation-q01",
                    "text": "Which of these standards and regulation hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-real-world-use",
                "name": "Real-world use",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Publishing and comparing regional population, employment and economic statistics.",
                  "Calculating and comparing regional GDP per inhabitant.",
                  "Supporting EU cohesion-policy eligibility assessments and funding allocation.",
                  "Joining regional statistical tables to geographic boundary datasets.",
                  "Analysing territorial disparities within Bulgaria and across the EU."
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-failure-modes-and-hazards",
                "name": "Failure modes and hazards",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Joining statistics and boundaries from different NUTS editions can produce incorrect territorial comparisons.",
                  "Confusing a statistical region with an administrative authority can imply powers or institutions that it does not possess.",
                  "Aggregated regional indicators can conceal substantial differences within a region.",
                  "Treating regional averages as characteristics of individual residents creates an ecological inference error.",
                  "Mixing NUTS levels can lead to overlapping coverage or double counting."
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-regional-variation",
                "name": "Regional variation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "In the historically familiar Bulgarian arrangement, NUTS 3 units correspond to the 28 provinces, also called oblasti.",
                  "The historically familiar higher-level arrangement groups Bulgaria into six NUTS 2 regions and two NUTS 1 regions; its applicability must be checked against the required classification edition."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-neighbours",
                "name": "Neighbouring kinds and how to tell them apart",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "name": "Administrative divisions of Bulgaria",
                    "difference": "Administrative divisions organise territorial government; NUTS units organise statistical reporting, although some boundaries coincide."
                  },
                  {
                    "name": "Local Administrative Units (LAU)",
                    "difference": "LAU describe local territorial units below the NUTS hierarchy rather than another NUTS regional level."
                  },
                  {
                    "name": "Bulgaria",
                    "difference": "Bulgaria is the country being subdivided; this registered thing is its system of statistical regions."
                  },
                  {
                    "name": "NUTS classification",
                    "difference": "NUTS is the wider European classification; this thing is its Bulgarian territorial component."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of NUTS statistical regions of Bulgaria this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "What are the complete official code, name and constituent-territory correspondences between Bulgaria's NUTS 2024 and NUTS 2027 editions?",
    "How do NSI's transition guidelines distinguish national implementation in 2026 from Eurostat application in 2027 for individual statistical products?",
    "Which NSI and GISCO boundary releases are appropriate for each edition, and do their geometries or area conventions differ materially?",
    "Which historical Bulgarian regional series have official reconstructions on NUTS 2027 boundaries, and which require estimates?",
    "How are extra-regio allocations and other nonstandard geographic codes represented in the Bulgarian datasets that this model will serve?"
  ],
  "statistics": {
    "bundles": 6,
    "layers": 11,
    "findings": 18,
    "questions": 33
  }
}
