{
  "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": "2026-10-22T11:48:33+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q5240942",
    "registryId": "vr.tr.k-lgrinda",
    "name": "kūlgrinda",
    "version": "0.2.0-wave.5",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.BLT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q5240942/",
  "model": {
    "registry_id": "vr.tr.k-lgrinda",
    "name": "kūlgrinda",
    "purpose": "Let an agent describe kulgrindas, their construction, history and protected sites, from archaeological and heritage sources.",
    "definition": "A man-made submerged causeway of stones laid across swamps or lakes, just below the water surface so that only people who knew the route could cross; found mainly in Lithuania and neighbouring areas and used for refuge and defence. Submerged routes built of wood are distinguished as medgrindas.",
    "what_it_is_for": "Hidden crossing of wetlands for refuge and defence.",
    "affordances": [
      "describe construction and purpose",
      "list known sites with heritage status",
      "explain dating and archaeology",
      "explain visitor access in general terms"
    ],
    "distinguishing_features": [
      "Built below the water surface to remain hidden.",
      "Known examples include Sietuva kulgrinda in Varniai Regional Park (Lukstas-Parsezeris wetlands).",
      "Dates vary by site: Baltic examples predate the wars with the Teutonic Order, and construction dates differ from medieval documentary mentions."
    ],
    "appearance": "A path of stones and timber beneath shallow water or peat, invisible from the surface.",
    "visual_identification": [
      "Often concealed by water or wetland deposits; visibility and signage must be checked for each site"
    ],
    "physical_properties": [
      {
        "quantity": "width",
        "typical_range": "site-specific; Sietuva about 3 to 4 m in swamp sections and about 8 m at a stream crossing",
        "unit": "m",
        "note": ""
      }
    ],
    "families_and_kinds": [
      "swamp kulgrinda",
      "lake kulgrinda",
      "river or stream crossing",
      "medgrinda (wooden submerged route, related)"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "causeway",
        "why": "structure"
      },
      {
        "relation": "is located in",
        "target": "Lithuania",
        "why": "country"
      },
      {
        "relation": "is related to",
        "target": "ford",
        "why": "crossing"
      },
      {
        "relation": "may be protected as",
        "target": "cultural heritage site",
        "why": "status per site"
      }
    ],
    "identifiers": [
      {
        "scheme": "Lithuanian Register of Cultural Property code",
        "value_or_pattern": "numeric",
        "note": "for registered sites"
      }
    ],
    "standards_and_regulation": [
      "Lithuanian Law on the Protection of Immovable Cultural Heritage"
    ],
    "failure_modes_and_hazards": [
      "Drowning risk off the route",
      "Damage to heritage from unauthorised access"
    ],
    "agent_conduct": {
      "may": [
        "describe sites and history"
      ],
      "must_not": [
        "encourage crossing without authorised guidance"
      ],
      "requires_human": []
    },
    "ethics": {
      "considerations": [
        "heritage protection"
      ],
      "affected_parties": [
        "local communities"
      ]
    },
    "owners": {
      "steward": "the Lithuanian heritage authorities and park administrations",
      "master_systems": [
        "Register of Cultural Property (Kulturos vertybiu registras)"
      ]
    },
    "facets_not_applicable": {},
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": []
  },
  "sources": [
    {
      "id": "SRC-001",
      "title": "Q5240942",
      "publisher": "Wikidata",
      "url": "https://www.wikidata.org/wiki/Q5240942",
      "what_it_supports": "identity of the registry item, labels and sitelinks",
      "url_status": "live"
    },
    {
      "id": "SRC-002",
      "title": "Kulgrinda",
      "publisher": "Visuotine lietuviu enciklopedija",
      "url": "https://www.vle.lt/straipsnis/kulgrinda/",
      "what_it_supports": "Definition, stone and timber construction, wetland and river settings, wider dimensions, chronology and uses.",
      "url_status": "blocked"
    },
    {
      "id": "SRC-003",
      "title": "Sietuva kulgrinda",
      "publisher": "Lithuanian State Service for Protected Areas",
      "url": "https://saugoma.lt/en/objects/objects-sietuva-kulgrinda",
      "what_it_supports": "Sietuva's location, three surviving stretches, measured dimensions and historical interpretation.",
      "url_status": "live"
    },
    {
      "id": "SRC-004",
      "title": "Varniai Regional Park Visitor Centre",
      "publisher": "Zemaitija Protected Areas Directorate",
      "url": "https://zemaitijosstd.lrv.lt/lt/veiklos-sritys/lankytoju-centrai/varniu-regioninio-parko-lankytoju-centras-ir-gamtos-mokykla/",
      "what_it_supports": "Sietuva's Varniai context, 14th-century documentary mention and managed visits.",
      "url_status": "blocked"
    },
    {
      "id": "SRC-005",
      "title": "Law on the Protection of Immovable Cultural Heritage, No I-733",
      "publisher": "Seimas of the Republic of Lithuania",
      "url": "https://e-seimas.lrs.lt/portal/legalAct/lt/TAD/TAIS.15165/asr",
      "what_it_supports": "Heritage protection framework and site-specific registration and protection.",
      "url_status": "blocked"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "site",
        "name": "Site",
        "description": "Which kulgrinda.",
        "rationale": "Identity first.",
        "layers": [
          {
            "id": "location",
            "name": "Location",
            "description": "Site.",
            "findings": [
              {
                "id": "site",
                "name": "Site",
                "description": "Name and place.",
                "questions": [
                  {
                    "text": "Which kulgrinda?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Where?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "status",
            "name": "Status",
            "description": "Protection.",
            "findings": [
              {
                "id": "heritage-status",
                "name": "Heritage status",
                "description": "Register code.",
                "questions": [
                  {
                    "text": "Is it registered?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Under which code?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "construction",
        "name": "Construction",
        "description": "Build.",
        "rationale": "Materials can be studied.",
        "layers": [
          {
            "id": "materials",
            "name": "Materials",
            "description": "Stones and logs.",
            "findings": [
              {
                "id": "materials",
                "name": "Materials",
                "description": "Surviving construction observed versus reconstruction, condition and water-level context.",
                "questions": [
                  {
                    "text": "Which materials?",
                    "kind": "provenance"
                  },
                  {
                    "text": "From which survey?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "dimensions",
            "name": "Dimensions",
            "description": "Size.",
            "findings": [
              {
                "id": "dimensions",
                "name": "Dimensions",
                "description": "Length and width.",
                "questions": [
                  {
                    "text": "How long and wide?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Measured when?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "history",
        "name": "History",
        "description": "Dating.",
        "rationale": "Dating needs evidence.",
        "layers": [
          {
            "id": "dating",
            "name": "Dating",
            "description": "Period.",
            "findings": [
              {
                "id": "date",
                "name": "Date",
                "description": "Period and method.",
                "questions": [
                  {
                    "text": "When was it built?",
                    "kind": "provenance"
                  },
                  {
                    "text": "By which method?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "use",
            "name": "Use",
            "description": "Purpose.",
            "findings": [
              {
                "id": "use",
                "name": "Use",
                "description": "Evidence for routes to forts or refuges and any documented ritual use.",
                "questions": [
                  {
                    "text": "What was it used for?",
                    "kind": "provenance"
                  },
                  {
                    "text": "According to which source?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "access",
        "name": "Access",
        "description": "Visiting.",
        "rationale": "Visits are managed.",
        "layers": [
          {
            "id": "visits",
            "name": "Visits",
            "description": "Routes.",
            "findings": [
              {
                "id": "visit",
                "name": "Visit",
                "description": "Conditions.",
                "questions": [
                  {
                    "text": "Can it be visited?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Under which conditions?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "safety",
            "name": "Safety",
            "description": "Risks.",
            "findings": [
              {
                "id": "safety",
                "name": "Safety",
                "description": "Rules.",
                "questions": [
                  {
                    "text": "Which safety rules apply?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Set by whom?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}