{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-yosemite-west-tioga-nps-segment-18552",
        "evidence_ids": [
          "evidence-yosemite-west-tioga-nps-segment-18552"
        ],
        "predicate": "official_dataset_route_segment",
        "spatial_scope_ids": [
          "scope-tioga-road-corridor"
        ],
        "subject_id": "route-segment-yosemite-west-tioga-nps-18552",
        "temporal_scope": null,
        "value": {
          "allowed_uses": "Hiker/Pedestrian|Pack and Saddle",
          "distance_status": "published_at_route_level_only",
          "end_coordinate": {
            "latitude": 37.8505206,
            "longitude": -119.6152103
          },
          "geometry_snapshot": {
            "feature_id": "nps-trail-18552",
            "path": "geometry/v0/snapshots/nps-yose-west-tioga-route-features-20260926.geojson",
            "sha256": "e9b878b1da456178657f8d751e67b836c82b6e31ec65d00e570f154b933cb03e"
          },
          "route_role": "official_mainline",
          "source_feature_id": "18552",
          "source_feature_name": "Lukens Lake Trail",
          "source_geometry_id": "{34D335E6-B385-4E93-A9A4-522019F96F87}",
          "start_coordinate": {
            "latitude": 37.8654271,
            "longitude": -119.6216945
          },
          "surface": "Native",
          "xy_accuracy": "unknown"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-yosemite-west-tioga-nps-segment-18552",
          "evidence_id": "evidence-yosemite-west-tioga-nps-segment-18552",
          "notes": "",
          "observation_id": "observation-nps-public-trails-west-tioga-20260926",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "geometry/v0/snapshots/nps-yose-west-tioga-route-features-20260926.geojson"
          ],
          "content": "Reviewed NPS Public Trails features identify the complete named May Lake Trail and Lukens Lake Trail geometries selected against the official NPS day-hike descriptions.",
          "observation_id": "observation-nps-public-trails-west-tioga-20260926",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-26T00:00:00+00:00",
          "source_id": "source-nps-public-trails-feature-service"
        }
      ],
      "sources": [
        {
          "locator": "https://mapservices.nps.gov/arcgis/rest/services/NationalDatasets/NPS_Public_Trails/FeatureServer/0",
          "publisher": "National Park Service",
          "source_id": "source-nps-public-trails-feature-service"
        }
      ],
      "subject": {
        "entity_id": "route-segment-yosemite-west-tioga-nps-18552",
        "kind": "route_segment",
        "name": "Lukens Lake Trail reviewed segment"
      }
    }
  ],
  "entity": {
    "entity_id": "route-segment-yosemite-west-tioga-nps-18552",
    "kind": "route_segment",
    "name": "Lukens Lake Trail reviewed segment"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260926-yosemite-west-tioga-route-graph",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/route-segment-yosemite-west-tioga-nps-18552.json",
      "reason": "Add reviewed west-Tioga route geometry from official NPS route descriptions and trail data.",
      "record_id": "route-segment-yosemite-west-tioga-nps-18552",
      "record_type": "entity",
      "summary": "Publish reviewed May Lake and Tioga Road-to-Lukens Lake route graphs and narrow the remaining west-Tioga topology gap."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260926-yosemite-west-tioga-route-graph",
      "evidence_refs": [
        "evidence-yosemite-west-tioga-nps-segment-18552"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-yosemite-west-tioga-nps-segment-18552.json",
      "reason": "Add reviewed west-Tioga route geometry from official NPS route descriptions and trail data.",
      "record_id": "claim-yosemite-west-tioga-nps-segment-18552",
      "record_type": "claim",
      "summary": "Publish reviewed May Lake and Tioga Road-to-Lukens Lake route graphs and narrow the remaining west-Tioga topology gap."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [
    {
      "evidence_ids": [
        "evidence-yosemite-west-tioga-nps-segment-18552"
      ],
      "object_id": "waterbody-lukens-lake",
      "predicate": "ends_at",
      "relationship_id": "relationship-yosemite-west-tioga-nps-18552-ends-at-waterbody-lukens-lake",
      "subject_id": "route-segment-yosemite-west-tioga-nps-18552",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-yosemite-west-tioga-nps-segment-18552"
      ],
      "object_id": "route-lukens-lake-tioga",
      "predicate": "part_of",
      "relationship_id": "relationship-yosemite-west-tioga-nps-18552-part-of-lukens-lake-tioga",
      "subject_id": "route-segment-yosemite-west-tioga-nps-18552",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-yosemite-west-tioga-nps-segment-18552"
      ],
      "object_id": "trailhead-lukens-lake-tioga",
      "predicate": "starts_at",
      "relationship_id": "relationship-yosemite-west-tioga-nps-18552-starts-at-trailhead-lukens-lake-tioga",
      "subject_id": "route-segment-yosemite-west-tioga-nps-18552",
      "temporal_scope": null
    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}