Trinity House Obelisk
E531769
Trinity House Obelisk is a historic maritime navigation marker on Portland Bill in Dorset, England, built to warn ships of the hazardous coastline.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Trinity House Obelisk canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5497281 — 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: Trinity House Obelisk Context triple: [Portland Bill, hasStructure, Trinity House Obelisk]
-
A.
Brunswick Monument
The Brunswick Monument is a 19th-century neo-Gothic mausoleum in Geneva, Switzerland, built to honor Charles II, Duke of Brunswick.
-
B.
Trinity House, Tower Hill
Trinity House, Tower Hill is the historic London headquarters of the Corporation of Trinity House, the authority responsible for lighthouses and maritime navigation aids in England, Wales, the Channel Islands, and Gibraltar.
-
C.
Peel Monument
Peel Monument is a prominent stone tower on Holcombe Hill in Greater Manchester, England, built to commemorate 19th-century British statesman Sir Robert Peel and offering panoramic views over the surrounding area.
-
D.
Scarborough Lighthouse
Scarborough Lighthouse is a historic coastal beacon in Scarborough, England, guiding ships along the North Sea and serving as a prominent feature of the town’s harbor.
-
E.
Nelson's Pillar
Nelson's Pillar was a prominent 19th-century monument in central Dublin, dedicated to Admiral Horatio Nelson and later destroyed in 1966.
- 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: Trinity House Obelisk Target entity description: Trinity House Obelisk is a historic maritime navigation marker on Portland Bill in Dorset, England, built to warn ships of the hazardous coastline.
-
A.
Brunswick Monument
The Brunswick Monument is a 19th-century neo-Gothic mausoleum in Geneva, Switzerland, built to honor Charles II, Duke of Brunswick.
-
B.
Trinity House, Tower Hill
Trinity House, Tower Hill is the historic London headquarters of the Corporation of Trinity House, the authority responsible for lighthouses and maritime navigation aids in England, Wales, the Channel Islands, and Gibraltar.
-
C.
Peel Monument
Peel Monument is a prominent stone tower on Holcombe Hill in Greater Manchester, England, built to commemorate 19th-century British statesman Sir Robert Peel and offering panoramic views over the surrounding area.
-
D.
Scarborough Lighthouse
Scarborough Lighthouse is a historic coastal beacon in Scarborough, England, guiding ships along the North Sea and serving as a prominent feature of the town’s harbor.
-
E.
Nelson's Pillar
Nelson's Pillar was a prominent 19th-century monument in central Dublin, dedicated to Admiral Horatio Nelson and later destroyed in 1966.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
daymark
ⓘ
maritime structure ⓘ navigation marker ⓘ obelisk ⓘ |
| access | publicly accessible site ⓘ |
| architecturalStyle | obelisk ⓘ |
| associatedWith |
Portland Bill Lighthouse
ⓘ
linked to:
Portland Bill lighthouse
Trinity House ⓘ |
| category |
Buildings and structures on the Isle of Portland
ⓘ
Grade II listed buildings in Dorset ⓘ Maritime navigation aids in England ⓘ |
| coast | Dorset coast ⓘ |
| constructionMaterial | Portland stone ⓘ |
| country | United Kingdom ⓘ |
| feature |
prominent white-painted stonework
ⓘ
tapering stone shaft ⓘ |
| function | maritime navigation marker ⓘ |
| hasUse | aid to coastal navigation ⓘ |
| heritageDesignationBy | Historic England ⓘ |
| heritageRegister |
National Heritage List for England
ⓘ
linked to:
National Heritage List for England entry
|
| heritageStatus | Grade II listed building ⓘ |
| isOn | Jurassic Coast ⓘ |
| locatedIn |
Dorset
ⓘ
England ⓘ Isle of Portland ⓘ United Kingdom ⓘ |
| location | Portland Bill ⓘ |
| maintainedBy | Trinity House ⓘ |
| managingOrganisation | Trinity House ⓘ |
| material | stone ⓘ |
| near |
Portland Bill Lighthouse
ⓘ
linked to:
Portland Bill lighthouse
Pulpit Rock, Portland ⓘ
linked to:
Portland Bill lighthouse
|
| notableFor | historic role in maritime navigation at Portland Bill ⓘ |
| overlooks | English Channel ⓘ |
| ownedBy | Trinity House ⓘ |
| partOf | system of navigation aids around Portland Bill ⓘ |
| purpose |
to serve as a daytime navigation aid
ⓘ
to warn ships of the hazardous coastline at Portland Bill ⓘ |
| region |
South West England
ⓘ
linked to:
southwest England
|
| riskAddressed |
dangerous rocks off Portland Bill
ⓘ
hazardous coastline around Portland Bill ⓘ |
| safetyRole | reducing shipwrecks near Portland Bill ⓘ |
| setting | clifftop at Portland Bill ⓘ |
| subjectOf | maritime safety regulations at Portland Bill ⓘ |
| touristAttraction | true ⓘ |
| UNESCOWorldHeritageContext |
Jurassic Coast World Heritage Site
ⓘ
linked to:
Jurassic Coast
|
| usedFor | visual coastal warning in daylight ⓘ |
| visibleFrom | ships approaching Portland Bill ⓘ |
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: Trinity House Obelisk Description of subject: Trinity House Obelisk is a historic maritime navigation marker on Portland Bill in Dorset, England, built to warn ships of the hazardous coastline.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.