{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-geometry-bear-spur",
        "evidence_ids": [
          "evidence-emigrant-geometry-bear-spur"
        ],
        "predicate": "reviewed_route_display_geometry",
        "spatial_scope_ids": [
          "scope-route-emigrant-crabtree-bear-lake"
        ],
        "subject_id": "route-segment-emigrant-crabtree-bear-spur",
        "temporal_scope": null,
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          "current_route_status": "unknown; pre-trip check required",
          "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
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            "longitude": -119.86702313700192
          },
          "geometry_snapshot": {
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            "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
            "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
          },
          "navigation_grade": false,
          "route_role": "official_mainline",
          "source_coordinate_accuracy": "unknown",
          "source_feature_id": 9430557,
          "source_globalid": "{8497BEEB-8635-4A89-8352-B24C998130DD}",
          "source_trail_number": "19E09",
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            164
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        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-geometry-bear-spur",
          "evidence_id": "evidence-emigrant-geometry-bear-spur",
          "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
          "observation_id": "observation-emigrant-geometry-bear-spur",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9430557, globalid {8497BEEB-8635-4A89-8352-B24C998130DD}, trail 19E09 BEAR LAKE: reviewed EPSG:4326 source vertices 0 through 164 are retained for display. Source segment_length 1 and gis_miles 0.9720000000000001 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-bear-spur",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-emigrant-geometry-camp-bear-junction",
        "evidence_ids": [
          "evidence-emigrant-geometry-camp-bear-junction"
        ],
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        "spatial_scope_ids": [
          "scope-route-emigrant-crabtree-bear-lake"
        ],
        "subject_id": "route-segment-emigrant-crabtree-camp-bear-junction",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4326",
          "current_route_status": "unknown; pre-trip check required",
          "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
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            "longitude": -119.87741437071607
          },
          "geometry_snapshot": {
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            "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
            "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
          },
          "navigation_grade": false,
          "route_role": "official_mainline",
          "source_coordinate_accuracy": "unknown",
          "source_feature_id": 9430618,
          "source_globalid": "{1D2CDA88-08B4-4846-B5CD-A4ECF893054B}",
          "source_trail_number": "20E16",
          "source_vertex_range_inclusive": [
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            806
          ],
          "start_coordinate": {
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            "longitude": -119.88391532965653
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        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-geometry-camp-bear-junction",
          "evidence_id": "evidence-emigrant-geometry-camp-bear-junction",
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          "observation_id": "observation-emigrant-geometry-camp-bear-junction",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9430618, globalid {1D2CDA88-08B4-4846-B5CD-A4ECF893054B}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 836 through 806 are retained for display. Source segment_length 10.1 and gis_miles 9.942 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-camp-bear-junction",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley",
        "evidence_ids": [
          "evidence-emigrant-geometry-lake-valley-pine-valley"
        ],
        "predicate": "reviewed_route_display_geometry",
        "spatial_scope_ids": [
          "scope-route-emigrant-crabtree-camp-lake",
          "scope-route-emigrant-crabtree-bear-lake"
        ],
        "subject_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4326",
          "current_route_status": "unknown; pre-trip check required",
          "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
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            "longitude": -119.90071919040176
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          "geometry_snapshot": {
            "feature_id": "usfs-emigrant-lake-valley-pine-valley",
            "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
            "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
          },
          "navigation_grade": false,
          "route_role": "official_mainline",
          "source_coordinate_accuracy": "unknown",
          "source_feature_id": 9428086,
          "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
          "source_trail_number": "20E16",
          "source_vertex_range_inclusive": [
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            67
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          "start_coordinate": {
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            "longitude": -119.90646170977695
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        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley",
          "evidence_id": "evidence-emigrant-geometry-lake-valley-pine-valley",
          "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
          "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 172 through 67 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-emigrant-geometry-pine-valley-camp",
        "evidence_ids": [
          "evidence-emigrant-geometry-pine-valley-camp"
        ],
        "predicate": "reviewed_route_display_geometry",
        "spatial_scope_ids": [
          "scope-route-emigrant-crabtree-camp-lake",
          "scope-route-emigrant-crabtree-bear-lake"
        ],
        "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4326",
          "current_route_status": "unknown; pre-trip check required",
          "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
          "end_coordinate": {
            "latitude": 38.16518574092221,
            "longitude": -119.88391532965653
          },
          "geometry_snapshot": {
            "feature_id": "usfs-emigrant-pine-valley-camp",
            "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
            "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
          },
          "navigation_grade": false,
          "route_role": "official_mainline",
          "source_coordinate_accuracy": "unknown",
          "source_feature_id": 9428086,
          "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
          "source_trail_number": "20E16",
          "source_vertex_range_inclusive": [
            67,
            0
          ],
          "start_coordinate": {
            "latitude": 38.165350570701605,
            "longitude": -119.90071919040176
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        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-geometry-pine-valley-camp",
          "evidence_id": "evidence-emigrant-geometry-pine-valley-camp",
          "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
          "observation_id": "observation-emigrant-geometry-pine-valley-camp",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 67 through 0 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-pine-valley-camp",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-emigrant-geometry-start-lake-valley",
        "evidence_ids": [
          "evidence-emigrant-geometry-start-lake-valley"
        ],
        "predicate": "reviewed_route_display_geometry",
        "spatial_scope_ids": [
          "scope-route-emigrant-crabtree-camp-lake",
          "scope-route-emigrant-crabtree-bear-lake"
        ],
        "subject_id": "route-segment-emigrant-crabtree-start-lake-valley",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4326",
          "current_route_status": "unknown; pre-trip check required",
          "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
          "end_coordinate": {
            "latitude": 38.17758396939358,
            "longitude": -119.90646170977695
          },
          "geometry_snapshot": {
            "feature_id": "usfs-emigrant-start-lake-valley",
            "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
            "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
          },
          "navigation_grade": false,
          "route_role": "official_mainline",
          "source_coordinate_accuracy": "unknown",
          "source_feature_id": 9428086,
          "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
          "source_trail_number": "20E16",
          "source_vertex_range_inclusive": [
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            172
          ],
          "start_coordinate": {
            "latitude": 38.178658657463544,
            "longitude": -119.9068410709654
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        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-geometry-start-lake-valley",
          "evidence_id": "evidence-emigrant-geometry-start-lake-valley",
          "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
          "observation_id": "observation-emigrant-geometry-start-lake-valley",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 182 through 172 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-start-lake-valley",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "route-emigrant-crabtree-bear-lake",
      "kind": "route",
      "name": "Crabtree to Bear Lake"
    },
    {
      "entity_id": "route-emigrant-crabtree-camp-lake",
      "kind": "route",
      "name": "Crabtree to Camp Lake"
    },
    {
      "entity_id": "route-segment-emigrant-crabtree-bear-spur",
      "kind": "route_segment",
      "name": "Bear Spur"
    },
    {
      "entity_id": "route-segment-emigrant-crabtree-camp-bear-junction",
      "kind": "route_segment",
      "name": "Camp Bear Junction"
    },
    {
      "entity_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley",
      "kind": "route_segment",
      "name": "Lake Valley Pine Valley"
    },
    {
      "entity_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "kind": "route_segment",
      "name": "Pine Valley Camp"
    },
    {
      "entity_id": "route-segment-emigrant-crabtree-start-lake-valley",
      "kind": "route_segment",
      "name": "Start Lake Valley"
    }
  ],
  "history": [
    {
      "action": "REPLACE",
      "change_set_id": "wp-20261006-emigrant-completion",
      "evidence_refs": [],
      "knowledge_gap_refs": [
        "gap-emigrant-crabtree-geometry-limitations"
      ],
      "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json",
      "reason": "Add combined southern approaches, boundary, entry-policy and facility audit; preserve uncertainty.",
      "record_id": "gap-emigrant-crabtree-geometry-limitations",
      "record_type": "gap",
      "summary": "Combine five southern/eastern Emigrant approaches with reviewed boundary, jurisdiction-specific planning and campground/operator inventory audit."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-crabtree-geometry",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json",
      "reason": "Attach reviewed federal display geometry without changing graph or mileage.",
      "record_id": "gap-emigrant-crabtree-geometry-limitations",
      "record_type": "gap",
      "summary": "Make the existing Crabtree lake approaches geographically drawable with reviewed USFS vertices and explicit display limits."
    },
    {
      "action": "REPLACE",
      "change_set_id": "wp-20261006-emigrant-western-coverage",
      "evidence_refs": [],
      "knowledge_gap_refs": [
        "gap-emigrant-crabtree-geometry-limitations"
      ],
      "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json",
      "reason": "Add bounded western approach, geometry and facility evidence; retain unresolved planning limits.",
      "record_id": "gap-emigrant-crabtree-geometry-limitations",
      "record_type": "gap",
      "summary": "Add six drawable western Emigrant approaches with shared physical segments, lake camping evidence and historical trailhead facilities."
    }
  ],
  "navigation": {
    "next_id": "gap-emigrant-crabtree-junction-mileage",
    "position": 171,
    "previous_id": "gap-emigrant-crabtree-camp-mileage",
    "total": 299
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "Public National Forest System Trails layer, feature 9430557, globalid {8497BEEB-8635-4A89-8352-B24C998130DD}, trail 19E09 BEAR LAKE: reviewed EPSG:4326 source vertices 0 through 164 are retained for display. Source segment_length 1 and gis_miles 0.9720000000000001 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
      "observation_id": "observation-emigrant-geometry-bear-spur",
      "observed_at": null,
      "observer": "Wayproof named-feature and official-map review",
      "retrieved_at": "2026-10-06T00:09:34+00:00",
      "source_id": "source-usfs-emigrant-nfs-trail-geometry"
    },
    {
      "artifact_refs": [],
      "content": "Public National Forest System Trails layer, feature 9430618, globalid {1D2CDA88-08B4-4846-B5CD-A4ECF893054B}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 836 through 806 are retained for display. Source segment_length 10.1 and gis_miles 9.942 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
      "observation_id": "observation-emigrant-geometry-camp-bear-junction",
      "observed_at": null,
      "observer": "Wayproof named-feature and official-map review",
      "retrieved_at": "2026-10-06T00:09:34+00:00",
      "source_id": "source-usfs-emigrant-nfs-trail-geometry"
    },
    {
      "artifact_refs": [],
      "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 172 through 67 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
      "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley",
      "observed_at": null,
      "observer": "Wayproof named-feature and official-map review",
      "retrieved_at": "2026-10-06T00:09:34+00:00",
      "source_id": "source-usfs-emigrant-nfs-trail-geometry"
    },
    {
      "artifact_refs": [],
      "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 67 through 0 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
      "observation_id": "observation-emigrant-geometry-pine-valley-camp",
      "observed_at": null,
      "observer": "Wayproof named-feature and official-map review",
      "retrieved_at": "2026-10-06T00:09:34+00:00",
      "source_id": "source-usfs-emigrant-nfs-trail-geometry"
    },
    {
      "artifact_refs": [],
      "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 182 through 172 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
      "observation_id": "observation-emigrant-geometry-start-lake-valley",
      "observed_at": null,
      "observer": "Wayproof named-feature and official-map review",
      "retrieved_at": "2026-10-06T00:09:34+00:00",
      "source_id": "source-usfs-emigrant-nfs-trail-geometry"
    }
  ],
  "record": {
    "gap_id": "gap-emigrant-crabtree-geometry-limitations",
    "question": "What does the Crabtree route display geometry establish?",
    "reason": "Camp western access remains a descriptive source-feature break, not a lake centroid or campsite. Reviewed Crabtree display geometry and Emigrant PAD-US boundary are published. Source accuracy, current trail alignment and conditions remain unknown; unsnapped Lake Valley mismatch, unreviewed branches, parking/facility connectors and navigation-grade survey remain unresolved.",
    "related_ids": [
      "claim-emigrant-geometry-start-lake-valley",
      "claim-emigrant-geometry-lake-valley-pine-valley",
      "claim-emigrant-geometry-pine-valley-camp",
      "claim-emigrant-geometry-camp-bear-junction",
      "claim-emigrant-geometry-bear-spur",
      "route-emigrant-crabtree-camp-lake",
      "route-emigrant-crabtree-bear-lake"
    ]
  },
  "record_type": "gap",
  "related_records": [
    {
      "record": {
        "claim_id": "claim-emigrant-geometry-start-lake-valley",
        "evidence_ids": [
          "evidence-emigrant-geometry-start-lake-valley"
        ],
        "predicate": "reviewed_route_display_geometry",
        "spatial_scope_ids": [
          "scope-route-emigrant-crabtree-camp-lake",
          "scope-route-emigrant-crabtree-bear-lake"
        ],
        "subject_id": "route-segment-emigrant-crabtree-start-lake-valley",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4326",
          "current_route_status": "unknown; pre-trip check required",
          "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
          "end_coordinate": {
            "latitude": 38.17758396939358,
            "longitude": -119.90646170977695
          },
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