{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-ohlone-mainline-atomic-distance-04",
        "evidence_ids": [
          "evidence-ohlone-mainline-atomic-distance-04"
        ],
        "predicate": "printed_atomic_route_distance_miles",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-trail"
        ],
        "subject_id": "route-leg-ohlone-mainline-034",
        "temporal_scope": {
          "ends_on": null,
          "starts_on": "2025-08-01"
        },
        "value": {
          "distance_miles": 0.21,
          "end_node_id": "route-node-ohlone-mileage-tick-29-2",
          "printed_label": ".21",
          "route_role": "official_mainline",
          "start_node_id": "route-node-ohlone-mileage-tick-29-1",
          "topology_status": "atomic_leg"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ohlone-mainline-atomic-distance-04",
          "evidence_id": "evidence-ohlone-mainline-atomic-distance-04",
          "notes": "Individually transcribed from the mileage label printed between ticks on the red official Ohlone route.",
          "observation_id": "observation-ohlone-map-route-graph-pilot",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The official Ohlone Wilderness Permit Map marks the red hikers-and-horses-only Ohlone route, numbered posts OT26 through OT35, and the Lichen Bark start area. It prints 0.91 mile from Lichen Bark to OT40; mainline distances of 0.37, 0.16, 0.22+0.21+0.35, 0.28, 0.99, 0.91, 0.52, 0.35, and 0.83 mile between OT26 and OT35; a Maggie's Half Acre parallel route of 0.05+0.84 mile between OT27 and OT29; a Stewart's Camp parallel route of 0.60+0.46+0.61+0.28 mile between OT33 and OT35; and a 0.16-mile one-way spur from OT26 to Doe Canyon Horse Camp. The map places water and restrooms at Lichen Bark and shows camp/facility access on the alternate routes. Distances are transcribed from printed tick labels; sums are derived and do not replace the printed components. A second map-faithful pass preserves all 39 individual mileage labels printed on the red official mainline outside the detailed OT26-OT35 slice, ordered from Stanford Avenue toward Lichen Bark. Each printed value is now assigned to an atomic leg bounded by a numbered post or an explicit intermediate mileage-tick node; two mapped consecutive-post connectors have no printed distance.",
          "observation_id": "observation-ohlone-map-route-graph-pilot",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/sites/default/files/Ohlone-Wilderness-Permit-Map-11x17.pdf",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
        }
      ],
      "subject": {
        "entity_id": "route-leg-ohlone-mainline-034",
        "kind": "route_segment",
        "name": "Ohlone mainline atomic leg 034"
      }
    }
  ],
  "entity": {
    "entity_id": "route-leg-ohlone-mainline-034",
    "kind": "route_segment",
    "name": "Ohlone mainline atomic leg 034"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ohlone-route-graph-pilot",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/route-leg-ohlone-mainline-034.json",
      "reason": "Publish the missing official-route anchors, atomic mileage legs, and intermediate map ticks needed for end-to-end traversal.",
      "record_id": "route-leg-ohlone-mainline-034",
      "record_type": "entity",
      "summary": "Add an Ohlone route-graph pilot for Lichen Bark and OT26-OT35, including official and alternate segments, facilities, printed mileage, derived detours, and explicit completeness/current-status gaps."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ohlone-route-graph-pilot",
      "evidence_refs": [
        "evidence-ohlone-mainline-atomic-distance-04"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-ohlone-mainline-atomic-distance-04.json",
      "reason": "Publish the missing official-route anchors, atomic mileage legs, and intermediate map ticks needed for end-to-end traversal.",
      "record_id": "claim-ohlone-mainline-atomic-distance-04",
      "record_type": "claim",
      "summary": "Add an Ohlone route-graph pilot for Lichen Bark and OT26-OT35, including official and alternate segments, facilities, printed mileage, derived detours, and explicit completeness/current-status gaps."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [
    {
      "evidence_ids": [
        "evidence-ohlone-mainline-atomic-distance-04"
      ],
      "object_id": "route-node-ohlone-mileage-tick-29-2",
      "predicate": "ends_at",
      "relationship_id": "relationship-route-leg-ohlone-mainline-034-end",
      "subject_id": "route-leg-ohlone-mainline-034",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-ohlone-mainline-atomic-distance-04"
      ],
      "object_id": "trail-ohlone-wilderness",
      "predicate": "part_of",
      "relationship_id": "relationship-route-leg-ohlone-mainline-034-trail",
      "subject_id": "route-leg-ohlone-mainline-034",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-ohlone-mainline-atomic-distance-04"
      ],
      "object_id": "route-node-ohlone-mileage-tick-29-1",
      "predicate": "starts_at",
      "relationship_id": "relationship-route-leg-ohlone-mainline-034-start",
      "subject_id": "route-leg-ohlone-mainline-034",
      "temporal_scope": null
    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}