{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-yosemite-hetch-hetchy-nps-segment-16728",
        "evidence_ids": [
          "evidence-yosemite-hetch-hetchy-nps-segment-16728"
        ],
        "predicate": "official_dataset_route_segment",
        "spatial_scope_ids": [
          "scope-hetch-hetchy"
        ],
        "subject_id": "route-segment-yosemite-hetch-hetchy-nps-16728",
        "temporal_scope": null,
        "value": {
          "allowed_uses": "Hiker/Pedestrian",
          "distance_status": "not_published_at_segment_level",
          "end_coordinate": {
            "latitude": 37.9633026,
            "longitude": -119.7663022
          },
          "geometry_snapshot": {
            "feature_id": "nps-trail-16728",
            "path": "geometry/v0/snapshots/nps-yose-hetch-hetchy-route-features-20260926.geojson",
            "sha256": "dc04ac70ffa741abdb75c9ab76ee08ab4657a1505f161ae08588960a0e5d41cd"
          },
          "route_role": "official_mainline",
          "source_feature_id": "16728",
          "source_feature_name": null,
          "source_geometry_id": "{DCB1DD5C-9B28-446B-B049-DA2DD94D950C}",
          "start_coordinate": {
            "latitude": 37.963288,
            "longitude": -119.7664419
          },
          "surface": "Masonry/Stone"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-yosemite-hetch-hetchy-nps-segment-16728",
          "evidence_id": "evidence-yosemite-hetch-hetchy-nps-segment-16728",
          "notes": "",
          "observation_id": "observation-nps-public-trails-hetch-hetchy-20260926",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "geometry/v0/snapshots/nps-yose-hetch-hetchy-route-features-20260926.geojson"
          ],
          "content": "Reviewed NPS Public Trails features provide exact shared endpoints for the Wapama Falls shoreline chain and Poopenaut Valley Trail selected against the official Hetch Hetchy map.",
          "observation_id": "observation-nps-public-trails-hetch-hetchy-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-hetch-hetchy-nps-16728",
        "kind": "route_segment",
        "name": "Hetch Hetchy trail segment 16728"
      }
    }
  ],
  "entity": {
    "entity_id": "route-segment-yosemite-hetch-hetchy-nps-16728",
    "kind": "route_segment",
    "name": "Hetch Hetchy trail segment 16728"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260926-yosemite-hetch-hetchy-route-graph",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/route-segment-yosemite-hetch-hetchy-nps-16728.json",
      "reason": "Add reviewed Hetch Hetchy route topology from the official NPS map and trail service.",
      "record_id": "route-segment-yosemite-hetch-hetchy-nps-16728",
      "record_type": "entity",
      "summary": "Publish reviewed Wapama Falls and Poopenaut Valley route graphs and narrow the remaining Hetch Hetchy topology gap."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260926-yosemite-hetch-hetchy-route-graph",
      "evidence_refs": [
        "evidence-yosemite-hetch-hetchy-nps-segment-16728"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-yosemite-hetch-hetchy-nps-segment-16728.json",
      "reason": "Add reviewed Hetch Hetchy route topology from the official NPS map and trail service.",
      "record_id": "claim-yosemite-hetch-hetchy-nps-segment-16728",
      "record_type": "claim",
      "summary": "Publish reviewed Wapama Falls and Poopenaut Valley route graphs and narrow the remaining Hetch Hetchy topology gap."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [
    {
      "evidence_ids": [
        "evidence-yosemite-hetch-hetchy-nps-segment-16728"
      ],
      "object_id": "route-node-yosemite-hetch-hetchy-09",
      "predicate": "ends_at",
      "relationship_id": "relationship-yosemite-hetch-hetchy-nps-16728-ends-at-node-yosemite-hetch-hetchy-09",
      "subject_id": "route-segment-yosemite-hetch-hetchy-nps-16728",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-yosemite-hetch-hetchy-nps-segment-16728"
      ],
      "object_id": "route-wapama-falls",
      "predicate": "part_of",
      "relationship_id": "relationship-yosemite-hetch-hetchy-nps-16728-part-of-wapama-falls",
      "subject_id": "route-segment-yosemite-hetch-hetchy-nps-16728",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-yosemite-hetch-hetchy-nps-segment-16728"
      ],
      "object_id": "route-node-yosemite-hetch-hetchy-10",
      "predicate": "starts_at",
      "relationship_id": "relationship-yosemite-hetch-hetchy-nps-16728-starts-at-node-yosemite-hetch-hetchy-10",
      "subject_id": "route-segment-yosemite-hetch-hetchy-nps-16728",
      "temporal_scope": null
    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}
