Bell Rock Lighthouse
E104857
Bell Rock Lighthouse is a historic offshore lighthouse built on the dangerous Bell Rock reef in the North Sea off the coast of Angus, Scotland, and is renowned as one of the oldest surviving sea-washed lighthouses in the world.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Bell Rock Lighthouse canonical | 17 |
| Bell Rock Lighthouse (offshore) | 1 |
| Bell Rock Lighthouse shore station | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T838508 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Bell Rock Lighthouse Context triple: [Forfarshire, containsLighthouse, Bell Rock Lighthouse]
-
A.
Chatham Lighthouse
Chatham Lighthouse is a historic coastal beacon on Cape Cod in Massachusetts, renowned for guiding ships through the treacherous waters off Chatham.
-
B.
Sankaty Head Light
Sankaty Head Light is a historic lighthouse on the eastern shore of Nantucket, Massachusetts, known for guiding ships along the treacherous waters off the island since the mid-19th century.
-
C.
Elie Lighthouse
Elie Lighthouse is a coastal navigational beacon near the village of Elie in Fife, Scotland, guiding ships along the Firth of Forth.
-
D.
Hel lighthouse
Hel lighthouse is a historic coastal beacon and popular tourist landmark located at the tip of Poland’s Hel Peninsula on the Baltic Sea.
-
E.
Cape Poge Lighthouse
Cape Poge Lighthouse is a historic coastal beacon on Chappaquiddick Island in Massachusetts, known for guiding ships through the waters off Martha’s Vineyard.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Bell Rock Lighthouse Target entity description: Bell Rock Lighthouse is a historic offshore lighthouse built on the dangerous Bell Rock reef in the North Sea off the coast of Angus, Scotland, and is renowned as one of the oldest surviving sea-washed lighthouses in the world.
-
A.
Chatham Lighthouse
Chatham Lighthouse is a historic coastal beacon on Cape Cod in Massachusetts, renowned for guiding ships through the treacherous waters off Chatham.
-
B.
Sankaty Head Light
Sankaty Head Light is a historic lighthouse on the eastern shore of Nantucket, Massachusetts, known for guiding ships along the treacherous waters off the island since the mid-19th century.
-
C.
Elie Lighthouse
Elie Lighthouse is a coastal navigational beacon near the village of Elie in Fife, Scotland, guiding ships along the Firth of Forth.
-
D.
Hel lighthouse
Hel lighthouse is a historic coastal beacon and popular tourist landmark located at the tip of Poland’s Hel Peninsula on the Baltic Sea.
-
E.
Cape Poge Lighthouse
Cape Poge Lighthouse is a historic coastal beacon on Chappaquiddick Island in Massachusetts, known for guiding ships through the waters off Martha’s Vineyard.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic building
ⓘ
lighthouse ⓘ offshore lighthouse ⓘ sea-washed lighthouse ⓘ |
| architect | Robert Stevenson ⓘ |
| automated | 1988 ⓘ |
| category | maritime navigation aid ⓘ |
| constructionEndDate | 1810 ⓘ |
| constructionMethod | interlocking stone courses ⓘ |
| constructionStartDate | 1807 ⓘ |
| coordinates | 56.430°N 2.386°W ⓘ |
| country | Scotland ⓘ |
| designer | Robert Stevenson ⓘ |
| distanceFromShore | about 11 miles off the coast ⓘ |
| focalHeight |
about 28 metres
ⓘ
about 93 feet ⓘ |
| foundation | rock ⓘ |
| height |
35 metres
ⓘ
about 115 feet ⓘ |
| heritageDesignation | Category A listed building ⓘ |
| heritageStatus | protected structure ⓘ |
| inception | 1810 ⓘ |
| laterLightSource | electric light ⓘ |
| lightCharacteristic | flashing white every 5 seconds ⓘ |
| locatedInAdministrativeTerritory | Angus ⓘ |
| locatedInCountry | Scotland ⓘ |
| locatedInRegion | eastern Scotland ⓘ |
| locatedInSovereignState | United Kingdom ⓘ |
| locatedInWaterBody | North Sea ⓘ |
| locatedNear |
Arbroath
ⓘ
Firth of Tay ⓘ |
| locatedOffCoastOf |
Angus
ⓘ
Scotland ⓘ |
| locatedOn | Bell Rock ⓘ |
| location | Bell Rock reef ⓘ |
| managedBy | Northern Lighthouse Board ⓘ |
| materialUsed | stone ⓘ |
| namedAfter | Bell Rock reef ⓘ |
| notableFor |
being one of the oldest surviving sea-washed lighthouses
ⓘ
engineering achievement in offshore construction ⓘ |
| opened | 1811 ⓘ |
| operator | Northern Lighthouse Board ⓘ |
| originalLightSource | oil lamps ⓘ |
| partOf | Northern Lighthouse Board network ⓘ |
| purpose | to warn ships of Bell Rock reef ⓘ |
| range | about 18 nautical miles ⓘ |
| sea | North Sea ⓘ |
| status | active lighthouse ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Bell Rock Lighthouse Description of subject: Bell Rock Lighthouse is a historic offshore lighthouse built on the dangerous Bell Rock reef in the North Sea off the coast of Angus, Scotland, and is renowned as one of the oldest surviving sea-washed lighthouses in the world.
Referenced by (19)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Bell Rock Lighthouse
linked to: Bell Rock Lighthouse
subject linked to:
Stevenson family of lighthouse engineers