Point Loma Lighthouse
E197072
Point Loma Lighthouse is a historic coastal beacon in San Diego, California, that has long guided ships navigating the entrance to San Diego Bay.
All labels observed (4)
| Label | Occurrences |
|---|---|
| New Point Loma Lighthouse | 3 |
| Old Point Loma Lighthouse | 3 |
| New Point Loma Lighthouse (nearby but associated) | 1 |
| Point Loma Lighthouse canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1692304 — 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: Point Loma Lighthouse Context triple: [San Diego Bay, entranceMarkedBy, Point Loma Lighthouse]
-
A.
Point Reyes Lighthouse
Point Reyes Lighthouse is a historic 19th-century coastal beacon on the Point Reyes headland in California, known for its dramatic cliffside setting and powerful foghorn guiding ships through the often treacherous waters off Marin County.
-
B.
Heceta Head Lighthouse
Heceta Head Lighthouse is a historic, highly photographed beacon perched on a scenic cliff along the central Oregon Coast, renowned for its powerful light and picturesque setting.
-
C.
Mulholland Point Lighthouse
Mulholland Point Lighthouse is a historic coastal beacon on Campobello Island in New Brunswick, Canada, overlooking the waters near the U.S.–Canada border.
-
D.
Point Sur Lighthouse
Point Sur Lighthouse is a historic 19th-century light station perched on a volcanic rock along California’s Big Sur coast, guiding ships along the rugged Pacific shoreline.
-
E.
Boca Chita Lighthouse
Boca Chita Lighthouse is a small, historic ornamental lighthouse located on Boca Chita Key in Biscayne National Park, Florida, known as a picturesque landmark rather than an active navigational aid.
- 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: Point Loma Lighthouse Target entity description: Point Loma Lighthouse is a historic coastal beacon in San Diego, California, that has long guided ships navigating the entrance to San Diego Bay.
-
A.
Point Reyes Lighthouse
Point Reyes Lighthouse is a historic 19th-century coastal beacon on the Point Reyes headland in California, known for its dramatic cliffside setting and powerful foghorn guiding ships through the often treacherous waters off Marin County.
-
B.
Heceta Head Lighthouse
Heceta Head Lighthouse is a historic, highly photographed beacon perched on a scenic cliff along the central Oregon Coast, renowned for its powerful light and picturesque setting.
-
C.
Mulholland Point Lighthouse
Mulholland Point Lighthouse is a historic coastal beacon on Campobello Island in New Brunswick, Canada, overlooking the waters near the U.S.–Canada border.
-
D.
Point Sur Lighthouse
Point Sur Lighthouse is a historic 19th-century light station perched on a volcanic rock along California’s Big Sur coast, guiding ships along the rugged Pacific shoreline.
-
E.
Boca Chita Lighthouse
Boca Chita Lighthouse is a small, historic ornamental lighthouse located on Boca Chita Key in Biscayne National Park, Florida, known as a picturesque landmark rather than an active navigational aid.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ tourist attraction ⓘ |
| architecturalStyle | Cape Cod style ⓘ |
| constructionStartDate | 1854 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse |
interpretive exhibit
ⓘ
museum ⓘ |
| elevationAboveSeaLevel | approximately 422 feet ⓘ |
| function | coastal navigation aid ⓘ |
| hasCategory |
Buildings and structures in San Diego
ⓘ
Lighthouses in California ⓘ Museums in San Diego ⓘ National Register of Historic Places listings in California ⓘ
surface form:
National Register of Historic Places in San Diego County, California
|
| hasExhibitOn |
lighthouse keepers’ lives
ⓘ
maritime navigation history ⓘ |
| heritageStatus | listed on the National Register of Historic Places ⓘ |
| inServiceFrom | 1855 ⓘ |
| inServiceUntil | 1891 ⓘ |
| lightCharacteristic | fixed white light (historical) ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Point Loma, San Diego, California ⓘ
surface form:
Point Loma
San Diego ⓘ San Diego County ⓘ |
| locatedInProtectedArea | Cabrillo National Monument ⓘ |
| locatedOn | Pacific coast ⓘ |
| managedBy | National Park Service ⓘ |
| material |
brick
ⓘ
stucco ⓘ |
| nearestCity | San Diego ⓘ |
| NRHPCountry |
United States of America
ⓘ
surface form:
United States
|
| NRHPType | building ⓘ |
| openToPublic | true ⓘ |
| originalLensType | third-order Fresnel lens ⓘ |
| overlooks |
Pacific Ocean
ⓘ
San Diego Bay ⓘ |
| ownedBy |
United States government
ⓘ
surface form:
United States federal government
|
| partOf | United States system of coastal lights ⓘ |
| reasonForDecommissioning | frequent fog and low clouds at high elevation ⓘ |
| region | Southern California ⓘ |
| replacedBy |
Point Loma Lighthouse
self-linksurface differs
ⓘ
surface form:
New Point Loma Lighthouse
|
| status | decommissioned as active lighthouse ⓘ |
| tourismType | heritage tourism ⓘ |
| towerShape | cylindrical tower with attached keeper’s quarters ⓘ |
| visitorActivity |
coastal viewing
ⓘ
touring historic rooms ⓘ |
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: Point Loma Lighthouse Description of subject: Point Loma Lighthouse is a historic coastal beacon in San Diego, California, that has long guided ships navigating the entrance to San Diego Bay.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Old Point Loma Lighthouse
this entity surface form:
New Point Loma Lighthouse
this entity surface form:
Old Point Loma Lighthouse
this entity surface form:
New Point Loma Lighthouse (nearby but associated)
this entity surface form:
New Point Loma Lighthouse
this entity surface form:
Old Point Loma Lighthouse
this entity surface form:
New Point Loma Lighthouse