{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-segment-tuolumne-young-18",
        "evidence_ids": [
          "evidence-segment-tuolumne-young-18-map",
          "evidence-segment-tuolumne-young-18-dataset"
        ],
        "predicate": "printed_atomic_route_distance_miles",
        "spatial_scope_ids": [
          "scope-tuolumne-meadows"
        ],
        "subject_id": "route-segment-tuolumne-young-18",
        "temporal_scope": null,
        "value": {
          "distance_miles": 1.8,
          "distance_status": "printed_on_official_map",
          "end_coordinate": {
            "latitude": 37.9379624591823,
            "longitude": -119.34530379208454
          },
          "geometry_snapshot": {
            "feature_id": "nps-trail-17944",
            "path": "geometry/v0/snapshots/nps-yose-tuolumne-route-features-20260925.geojson",
            "sha256": "d53d6a93e218c53b4e74f2e134bdcc7d97f4f8cc132c56979d650a6851a14069"
          },
          "route_role": "official_mainline",
          "source_feature_id": "17944",
          "source_feature_name": null,
          "source_geometry_id": "{9D7C6F83-FC78-4693-9064-B7158FB9AB2E}",
          "start_coordinate": {
            "latitude": 37.92836589668656,
            "longitude": -119.36732185560271
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-segment-tuolumne-young-18",
          "evidence_id": "evidence-segment-tuolumne-young-18-map",
          "notes": "Official map confirms route membership and junction sequence.",
          "observation_id": "observation-nps-yosemite-tuolumne-trails-map-20260925",
          "stance": "supports"
        },
        {
          "claim_id": "claim-segment-tuolumne-young-18",
          "evidence_id": "evidence-segment-tuolumne-young-18-dataset",
          "notes": "NPS Public Trails feature 17944 supplies reviewed display geometry.",
          "observation_id": "observation-nps-public-trails-tuolumne-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The official 2024 Tuolumne Meadows Trails map shows the day-hike trail network, junctions, destinations, parking, restrooms, and printed leg mileages. It warns that the map is not for overnight trips and advises asking a ranger about current conditions.",
          "observation_id": "observation-nps-yosemite-tuolumne-trails-map-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T00:00:00+00:00",
          "source_id": "source-nps-yosemite-tuolumne-trails-map-2024"
        },
        {
          "artifact_refs": [
            "geometry/v0/snapshots/nps-yose-tuolumne-route-features-20260925.geojson"
          ],
          "content": "Reviewed NPS Public Trails features provide the displayed line geometry and source feature identifiers for nine Tuolumne day-hike graphs selected against the official map.",
          "observation_id": "observation-nps-public-trails-tuolumne-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T00:00:00+00:00",
          "source_id": "source-nps-public-trails-feature-service"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/yose/planyourvisit/images/TrailMaps_TM_2024_V1.jpg?maxwidth=4200&autorotate=false",
          "publisher": "National Park Service",
          "source_id": "source-nps-yosemite-tuolumne-trails-map-2024"
        },
        {
          "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-tuolumne-young-18",
        "kind": "route_segment",
        "name": "Young Lakes 1.8-mile final approach"
      }
    }
  ],
  "entity": {
    "entity_id": "route-segment-tuolumne-young-18",
    "kind": "route_segment",
    "name": "Young Lakes 1.8-mile final approach"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-tuolumne-route-depth",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/route-segment-tuolumne-young-18.json",
      "reason": "Publish one atomic, explicitly connected Tuolumne route leg.",
      "record_id": "route-segment-tuolumne-young-18",
      "record_type": "entity",
      "summary": "Publish reviewed NPS segment topology and display geometry for nine Tuolumne Meadows day hikes, including shared corridors and map-printed legs, while narrowing the unresolved gap to Twin Bridges."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-tuolumne-route-depth",
      "evidence_refs": [
        "evidence-segment-tuolumne-young-18-map",
        "evidence-segment-tuolumne-young-18-dataset"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-segment-tuolumne-young-18.json",
      "reason": "Publish the reviewed segment topology, source identity, and bounded distance status.",
      "record_id": "claim-segment-tuolumne-young-18",
      "record_type": "claim",
      "summary": "Publish reviewed NPS segment topology and display geometry for nine Tuolumne Meadows day hikes, including shared corridors and map-printed legs, while narrowing the unresolved gap to Twin Bridges."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [
    {
      "evidence_ids": [
        "evidence-segment-tuolumne-young-18-map",
        "evidence-segment-tuolumne-young-18-dataset"
      ],
      "object_id": "waterbody-young-lakes",
      "predicate": "ends_at",
      "relationship_id": "relationship-segment-tuolumne-young-18-ends-at",
      "subject_id": "route-segment-tuolumne-young-18",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-segment-tuolumne-young-18-map",
        "evidence-segment-tuolumne-young-18-dataset"
      ],
      "object_id": "route-young-lakes-day-hike",
      "predicate": "part_of",
      "relationship_id": "relationship-segment-tuolumne-young-18-part-of-young-lakes-day-hike",
      "subject_id": "route-segment-tuolumne-young-18",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-segment-tuolumne-young-18-map",
        "evidence-segment-tuolumne-young-18-dataset"
      ],
      "object_id": "route-node-tuolumne-young-01",
      "predicate": "starts_at",
      "relationship_id": "relationship-segment-tuolumne-young-18-starts-at",
      "subject_id": "route-segment-tuolumne-young-18",
      "temporal_scope": null
    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}