{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-lukens-lake-tioga-ordered-geometry-20260926",
        "evidence_ids": [
          "evidence-lukens-lake-tioga-ordered-geometry-20260926"
        ],
        "predicate": "ordered_route_geometry",
        "spatial_scope_ids": [
          "scope-tioga-road-corridor"
        ],
        "subject_id": "route-lukens-lake-tioga",
        "temporal_scope": null,
        "value": {
          "distance_status": "published_at_route_level_only",
          "route_shape": "out_and_back_objective_corridor",
          "segment_ids": [
            "route-segment-yosemite-west-tioga-nps-18552"
          ],
          "start_node_id": "trailhead-lukens-lake-tioga"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lukens-lake-tioga-ordered-geometry-20260926",
          "evidence_id": "evidence-lukens-lake-tioga-ordered-geometry-20260926",
          "notes": "",
          "observation_id": "observation-nps-west-tioga-route-review-20260926",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The NPS day-hike page identifies the May Lake and Tioga Road-to-Lukens Lake route starts, objectives, round-trip distances, and named trail corridors used for this graph.",
          "observation_id": "observation-nps-west-tioga-route-review-20260926",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-26T00:00:00+00:00",
          "source_id": "source-nps-yosemite-crane-flat-white-wolf-hikes"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/yose/planyourvisit/whitewolf.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-yosemite-crane-flat-white-wolf-hikes"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-may-lake-day-hike-ordered-geometry-20260926",
        "evidence_ids": [
          "evidence-may-lake-day-hike-ordered-geometry-20260926"
        ],
        "predicate": "ordered_route_geometry",
        "spatial_scope_ids": [
          "scope-tioga-road-corridor"
        ],
        "subject_id": "route-may-lake-day-hike",
        "temporal_scope": null,
        "value": {
          "distance_status": "published_at_route_level_only",
          "route_shape": "out_and_back_objective_corridor",
          "segment_ids": [
            "route-segment-yosemite-west-tioga-nps-19452"
          ],
          "start_node_id": "trailhead-may-lake"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-may-lake-day-hike-ordered-geometry-20260926",
          "evidence_id": "evidence-may-lake-day-hike-ordered-geometry-20260926",
          "notes": "",
          "observation_id": "observation-nps-west-tioga-route-review-20260926",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The NPS day-hike page identifies the May Lake and Tioga Road-to-Lukens Lake route starts, objectives, round-trip distances, and named trail corridors used for this graph.",
          "observation_id": "observation-nps-west-tioga-route-review-20260926",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-26T00:00:00+00:00",
          "source_id": "source-nps-yosemite-crane-flat-white-wolf-hikes"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/yose/planyourvisit/whitewolf.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-yosemite-crane-flat-white-wolf-hikes"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "route-lukens-lake-tioga",
      "kind": "route",
      "name": "Lukens Lake from Tioga Road"
    },
    {
      "entity_id": "route-may-lake-day-hike",
      "kind": "route",
      "name": "May Lake Day Hike"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260926-yosemite-west-tioga-route-graph",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-nps-west-tioga-route-review-20260926.json",
      "reason": "Add reviewed west-Tioga route geometry from official NPS route descriptions and trail data.",
      "record_id": "observation-nps-west-tioga-route-review-20260926",
      "record_type": "observation",
      "summary": "Publish reviewed May Lake and Tioga Road-to-Lukens Lake route graphs and narrow the remaining west-Tioga topology gap."
    }
  ],
  "navigation": {
    "next_id": "observation-nps-yosemite-basic-20260922",
    "position": 886,
    "previous_id": "observation-nps-seki-whitney-20260923",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "The NPS day-hike page identifies the May Lake and Tioga Road-to-Lukens Lake route starts, objectives, round-trip distances, and named trail corridors used for this graph.",
      "observation_id": "observation-nps-west-tioga-route-review-20260926",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-26T00:00:00+00:00",
      "source_id": "source-nps-yosemite-crane-flat-white-wolf-hikes"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "The NPS day-hike page identifies the May Lake and Tioga Road-to-Lukens Lake route starts, objectives, round-trip distances, and named trail corridors used for this graph.",
    "observation_id": "observation-nps-west-tioga-route-review-20260926",
    "observed_at": null,
    "observer": "",
    "retrieved_at": "2026-09-26T00:00:00+00:00",
    "source_id": "source-nps-yosemite-crane-flat-white-wolf-hikes"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.nps.gov/yose/planyourvisit/whitewolf.htm",
      "publisher": "National Park Service",
      "source_id": "source-nps-yosemite-crane-flat-white-wolf-hikes"
    }
  ]
}