{
  "asset_id": "LUX-ASSET-000623",
  "edges": [
    {
      "confidence_level": "medium",
      "date": "",
      "description": "Tory Island Chance Brothers hyper-radial optic installed at host LUX-PLACE-000004",
      "event_id": "HERITAGE-REL-000047",
      "id": "HERITAGE-REL-000047",
      "relation_type": "installed_in",
      "source": "LUX-ASSET-000607",
      "target": "LUX-PLACE-000004"
    },
    {
      "confidence_level": "medium",
      "date": "",
      "description": "Tory Island Chance Brothers hyper-radial optic installed at host LUX-LH-000554",
      "event_id": "HERITAGE-REL-000084",
      "id": "HERITAGE-REL-000084",
      "relation_type": "installed_in",
      "source": "LUX-ASSET-000607",
      "target": "LUX-LH-000554"
    },
    {
      "confidence_level": "medium",
      "date": "1858",
      "description": "The imported Pencarrow Head Chance Brothers asset is modeled as a second-order fixed lens manufactured in 1858 for the upper Pencarrow lighthouse system.",
      "event_id": "HERITAGE-REL-000105",
      "id": "HERITAGE-REL-000105",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000238",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "medium",
      "date": "1860-1862",
      "description": "Chance Brothers supplied the earlier first-order fixed Tory Island optic.",
      "event_id": "HERITAGE-REL-000201",
      "id": "HERITAGE-REL-000201",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000668",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "high",
      "date": "1862",
      "description": "The earlier first-order fixed optic entered service at Tory Island in 1862.",
      "event_id": "HERITAGE-REL-000202",
      "id": "HERITAGE-REL-000202",
      "relation_type": "installed_at",
      "source": "LUX-ASSET-000668",
      "target": "LUX-PLACE-000004"
    },
    {
      "confidence_level": "medium",
      "date": "1877",
      "description": "Secondary apparatus history attributes the historical first-order optic to Chance Brothers.",
      "event_id": "HERITAGE-REL-000220",
      "id": "HERITAGE-REL-000220",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000577",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "high",
      "date": "1887",
      "description": "Barbier & Fenestre manufactured the original Tory Island hyper-radial lenses in 1887.",
      "event_id": "HERITAGE-REL-000029",
      "id": "HERITAGE-REL-000029",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000607",
      "target": "LUX-PLACE-000027"
    },
    {
      "confidence_level": "high",
      "date": "1887",
      "description": "The original hyper-radial optic was installed in the Tory Island Lighthouse context in 1887.",
      "event_id": "HERITAGE-REL-000030",
      "id": "HERITAGE-REL-000030",
      "relation_type": "installed_at",
      "source": "LUX-ASSET-000607",
      "target": "LUX-PLACE-000004"
    },
    {
      "confidence_level": "medium",
      "date": "1887-1923",
      "description": "The original hyper-radial optic was historically part of the Tory Island Lighthouse optical system before reconstruction.",
      "event_id": "HERITAGE-REL-000046",
      "id": "HERITAGE-REL-000046",
      "relation_type": "historically_part_of",
      "source": "LUX-ASSET-000607",
      "target": "LUX-PLACE-000004"
    },
    {
      "confidence_level": "high",
      "date": "1887",
      "description": "The glass lens panels originated in the 1887 Barbier & Fenestre manufacture.",
      "event_id": "HERITAGE-REL-000199",
      "id": "HERITAGE-REL-000199",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000623",
      "target": "LUX-PLACE-000027"
    },
    {
      "confidence_level": "high",
      "date": "1887",
      "description": "The glass lens panels originated in the 1887 Barbier & Fenestre manufacture.",
      "event_id": "HERITAGE-REL-000200",
      "id": "HERITAGE-REL-000200",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000624",
      "target": "LUX-PLACE-000027"
    },
    {
      "confidence_level": "high",
      "date": "1889",
      "description": "Chance Brothers manufactured the Cape Byron red-sector light.",
      "event_id": "HERITAGE-REL-000214",
      "id": "HERITAGE-REL-000214",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000616",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "high",
      "date": "1889",
      "description": "Chance Brothers manufactured the separate Cape Byron lantern component.",
      "event_id": "HERITAGE-REL-000218",
      "id": "HERITAGE-REL-000218",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000670",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "high",
      "date": "1903",
      "description": "Chance Brothers manufactured the Norah Head first-order optic.",
      "event_id": "HERITAGE-REL-000210",
      "id": "HERITAGE-REL-000210",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000614",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "high",
      "date": "1903",
      "description": "Chance Brothers manufactured the original Norah Head lantern.",
      "event_id": "HERITAGE-REL-000212",
      "id": "HERITAGE-REL-000212",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000615",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "medium",
      "date": "1909",
      "description": "Chance Heritage Trust catalogues a Chance Brothers fourth-order fixed lens manufactured in 1909 for the Lismore record; this relation records manufacture, not installation.",
      "event_id": "HERITAGE-REL-000226",
      "id": "HERITAGE-REL-000226",
      "relation_type": "manufactured_by",
      "source": "LUX-ASSET-000198",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "high",
      "date": "1922-1923",
      "description": "Chance Brothers reconstructed the Barbier & Fenestre Tory apparatus in 1922/1923.",
      "event_id": "tory-optic-reconstruction-1922-1924",
      "id": "HERITAGE-REL-000196",
      "relation_type": "reconstructed_by",
      "source": "LUX-ASSET-000607",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "medium",
      "date": "1923-1928",
      "description": "The original Tory optic was removed from its original configuration before reconstruction into two biform optics.",
      "event_id": "HERITAGE-REL-000031",
      "id": "HERITAGE-REL-000031",
      "relation_type": "removed_from",
      "source": "LUX-ASSET-000607",
      "target": "LUX-PLACE-000004"
    },
    {
      "confidence_level": "medium",
      "date": "1923-1928",
      "description": "The original Tory optic was sent to Chance Brothers in Smethwick for reconstruction.",
      "event_id": "HERITAGE-REL-000032",
      "id": "HERITAGE-REL-000032",
      "relation_type": "moved_to",
      "source": "LUX-ASSET-000607",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "medium",
      "date": "1923-1928",
      "description": "One derived biform component continued the Tory Island optic lineage.",
      "event_id": "HERITAGE-REL-000033",
      "id": "HERITAGE-REL-000033",
      "relation_type": "split_into",
      "source": "LUX-ASSET-000607",
      "target": "LUX-ASSET-000623"
    },
    {
      "confidence_level": "high",
      "date": "1923-1928",
      "description": "The Mew Island / Great Light component derives from the divided Tory Island hyper-radial optic.",
      "event_id": "HERITAGE-REL-000034",
      "id": "HERITAGE-REL-000034",
      "relation_type": "split_into",
      "source": "LUX-ASSET-000607",
      "target": "LUX-ASSET-000624"
    },
    {
      "confidence_level": "medium",
      "date": "1923-1928",
      "description": "The Tory-retained biform component is derived from the original Tory Island hyper-radial optic.",
      "event_id": "HERITAGE-REL-000035",
      "id": "HERITAGE-REL-000035",
      "relation_type": "derived_from",
      "source": "LUX-ASSET-000623",
      "target": "LUX-ASSET-000607"
    },
    {
      "confidence_level": "high",
      "date": "1923-1928",
      "description": "The Mew Island / Great Light component is derived from the original Tory Island hyper-radial optic.",
      "event_id": "HERITAGE-REL-000036",
      "id": "HERITAGE-REL-000036",
      "relation_type": "derived_from",
      "source": "LUX-ASSET-000624",
      "target": "LUX-ASSET-000607"
    },
    {
      "confidence_level": "high",
      "date": "1923",
      "description": "The Tory-retained biform component continued in service at Tory Island.",
      "event_id": "HERITAGE-REL-000037",
      "id": "HERITAGE-REL-000037",
      "relation_type": "installed_at",
      "source": "LUX-ASSET-000623",
      "target": "LUX-PLACE-000004"
    },
    {
      "confidence_level": "high",
      "date": "1923",
      "description": "Chance Brothers produced the Tory-retained biform configuration from the original lenses.",
      "event_id": "tory-optic-reconstruction-1922-1924",
      "id": "HERITAGE-REL-000197",
      "relation_type": "reconstructed_by",
      "source": "LUX-ASSET-000623",
      "target": "LUX-PLACE-000005"
    },
    {
      "confidence_level": "high",
      "date": "1924-1928",
      "description": "Chance Brothers reconstructed the remaining panels for the Mew Island biform installation.",
      "event_id": "tory-optic-reconstruction-1922-1924",
      "id": "HERITAGE-REL-000198",
      "relation_type": "reconstructed_by",
      "source": "LUX-ASSET-000624",
      "target": "LUX-PLACE-000005"
    }
  ],
  "nodes": [
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000198",
      "is_root": false,
      "label": "Lismore Lighthouse: Chance Brothers fourth-order fixed lens",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000198/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000238",
      "is_root": false,
      "label": "Pencarrow Head Lighthouse Chance Brothers lens",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000238/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000577",
      "is_root": false,
      "label": "Casquets 1877 first-order Chance Brothers optic",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000577/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000607",
      "is_root": false,
      "label": "Tory Island 1887 Barbier & Fenestre hyper-radial optic",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000607/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000614",
      "is_root": false,
      "label": "Norah Head Chance Bros first-order bivalve dioptric Fresnel lens",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000614/"
    },
    {
      "asset_kind": "lantern",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000615",
      "is_root": false,
      "label": "Norah Head original Chance Bros cast-iron and copper lantern house",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000615/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000616",
      "is_root": false,
      "label": "Cape Byron Chance Bros red sector light",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000616/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000623",
      "is_root": true,
      "label": "Tory Island retained hyper-radial optic component",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000623/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000624",
      "is_root": false,
      "label": "The Great Light / Mew Island hyper-radial optic component",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000624/"
    },
    {
      "asset_kind": "lens",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000668",
      "is_root": false,
      "label": "Tory Island 1862 first-order fixed optic",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000668/"
    },
    {
      "asset_kind": "lantern",
      "entity_type": "heritage_asset",
      "id": "LUX-ASSET-000670",
      "is_root": false,
      "label": "Cape Byron Chance Brothers lantern",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": "/heritage-assets/LUX-ASSET-000670/"
    },
    {
      "asset_kind": "",
      "entity_type": "",
      "id": "LUX-LH-000554",
      "is_root": false,
      "label": "LUX-LH-000554",
      "latitude": null,
      "longitude": null,
      "place_type": "",
      "url": ""
    },
    {
      "asset_kind": "",
      "entity_type": "heritage_place",
      "id": "LUX-PLACE-000004",
      "is_root": false,
      "label": "Tory Island Lighthouse",
      "latitude": 55.272617,
      "longitude": -8.2494,
      "place_type": "historical_location",
      "url": "/heritage-places/LUX-PLACE-000004/"
    },
    {
      "asset_kind": "",
      "entity_type": "heritage_place",
      "id": "LUX-PLACE-000005",
      "is_root": false,
      "label": "Chance Brothers Smethwick Works",
      "latitude": null,
      "longitude": null,
      "place_type": "historical_location",
      "url": "/heritage-places/LUX-PLACE-000005/"
    },
    {
      "asset_kind": "",
      "entity_type": "heritage_place",
      "id": "LUX-PLACE-000027",
      "is_root": false,
      "label": "Barbier & Fenestre works, Paris",
      "latitude": null,
      "longitude": null,
      "place_type": "historical_location",
      "url": "/heritage-places/LUX-PLACE-000027/"
    }
  ],
  "root_id": "LUX-ASSET-000623"
}