Dassen Island Lighthouse
E485498
Dassen Island Lighthouse is a historic coastal beacon located on Dassen Island off the west coast of South Africa, guiding maritime traffic in the Atlantic Ocean.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Dassen Island Lighthouse canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4854614 — 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: Dassen Island Lighthouse Context triple: [Dassen Island, lighthouseName, Dassen Island Lighthouse]
-
A.
Capul Island lighthouse
Capul Island lighthouse is a historic Spanish-era navigational beacon in Northern Samar, Philippines, known for guiding ships through the treacherous San Bernardino Strait and offering panoramic coastal views.
-
B.
Cana Island Lighthouse
Cana Island Lighthouse is a historic 19th-century lighthouse and popular maritime landmark located off the coast of Door County, Wisconsin.
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C.
Ten Pound Island Light
Ten Pound Island Light is a historic lighthouse located on Ten Pound Island in Gloucester Harbor, Massachusetts, that once guided maritime traffic into the busy fishing port.
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D.
Robbins Reef Lighthouse
Robbins Reef Lighthouse is a historic offshore beacon in New York Harbor that has guided ships since the 19th century and is famed for its distinctive “sparkplug” design and the story of its longtime keeper, Kate Walker.
-
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: Dassen Island Lighthouse Target entity description: Dassen Island Lighthouse is a historic coastal beacon located on Dassen Island off the west coast of South Africa, guiding maritime traffic in the Atlantic Ocean.
-
A.
Capul Island lighthouse
Capul Island lighthouse is a historic Spanish-era navigational beacon in Northern Samar, Philippines, known for guiding ships through the treacherous San Bernardino Strait and offering panoramic coastal views.
-
B.
Cana Island Lighthouse
Cana Island Lighthouse is a historic 19th-century lighthouse and popular maritime landmark located off the coast of Door County, Wisconsin.
-
C.
Ten Pound Island Light
Ten Pound Island Light is a historic lighthouse located on Ten Pound Island in Gloucester Harbor, Massachusetts, that once guided maritime traffic into the busy fishing port.
-
D.
Robbins Reef Lighthouse
Robbins Reef Lighthouse is a historic offshore beacon in New York Harbor that has guided ships since the 19th century and is famed for its distinctive “sparkplug” design and the story of its longtime keeper, Kate Walker.
-
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 (33)
| Predicate | Object |
|---|---|
| instanceOf |
coastal beacon
ⓘ
lighthouse ⓘ navigational aid ⓘ |
| access | accessible primarily by boat ⓘ |
| associatedWith |
South African lighthouse network
ⓘ
South African maritime safety ⓘ |
| category |
Buildings and structures in the Western Cape
ⓘ
Coastal infrastructure of South Africa ⓘ Lighthouses in South Africa ⓘ |
| constructionMaterial | masonry ⓘ |
| coordinates | approximately -33.4333, 18.0833 ⓘ |
| country | South Africa ⓘ |
| environment | rocky island environment ⓘ |
| function | aids navigation in the Atlantic Ocean ⓘ |
| heritageStatus | historic lighthouse ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| lightRange | long-range coastal light ⓘ |
| locatedInBodyOfWater | Atlantic Ocean ⓘ |
| locatedInProvince | Western Cape ⓘ |
| locatedInRegion | West Coast of South Africa ⓘ |
| locatedNear |
Cape Town
ⓘ
Yzerfontein ⓘ |
| locatedOn | Dassen Island ⓘ |
| managingAgent | Transnet National Ports Authority ⓘ |
| marking | white tower with red lantern ⓘ |
| nearbyHazard |
rocky coastline
ⓘ
shoals around Dassen Island ⓘ |
| powerSource | electric light ⓘ |
| purpose |
to guide maritime traffic
ⓘ
to warn ships of coastal hazards ⓘ |
| servesShippingRoute | shipping routes along the west coast of South Africa ⓘ |
| situatedOn | uninhabited island ⓘ |
| towerShape | cylindrical tower ⓘ |
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: Dassen Island Lighthouse Description of subject: Dassen Island Lighthouse is a historic coastal beacon located on Dassen Island off the west coast of South Africa, guiding maritime traffic in the Atlantic Ocean.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.