Sankaty Head Light
E9372
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sankaty Head Light canonical | 5 |
| Sankaty Head Lighthouse | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T37388 — 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: Sankaty Head Light Context triple: [Nantucket, hasLandmark, Sankaty Head Light]
-
A.
Great Point Light
Great Point Light is a historic lighthouse located at the northern tip of Nantucket Island, Massachusetts, guiding vessels through the surrounding coastal waters.
-
B.
Lynn Harbor
Lynn Harbor is a coastal inlet and harbor area along the Atlantic Ocean in Lynn, Massachusetts, used historically and presently for maritime and recreational activities.
-
C.
Boston Fish Pier
Boston Fish Pier is a historic waterfront complex in Boston known as a longtime hub for the city’s commercial fishing and seafood industry.
-
D.
Zephyr Cove
Zephyr Cove is a small lakeside community and popular recreation area on the southeastern shore of Lake Tahoe in Nevada, known for its beaches, boating, and scenic mountain views.
-
E.
High Rock Tower
High Rock Tower is a historic stone observation tower and former lighthouse in Lynn, Massachusetts, known for its panoramic coastal views and public park setting.
- 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: Sankaty Head Light Target entity description: 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.
-
A.
Great Point Light
Great Point Light is a historic lighthouse located at the northern tip of Nantucket Island, Massachusetts, guiding vessels through the surrounding coastal waters.
-
B.
Lynn Harbor
Lynn Harbor is a coastal inlet and harbor area along the Atlantic Ocean in Lynn, Massachusetts, used historically and presently for maritime and recreational activities.
-
C.
Boston Fish Pier
Boston Fish Pier is a historic waterfront complex in Boston known as a longtime hub for the city’s commercial fishing and seafood industry.
-
D.
Zephyr Cove
Zephyr Cove is a small lakeside community and popular recreation area on the southeastern shore of Lake Tahoe in Nevada, known for its beaches, boating, and scenic mountain views.
-
E.
High Rock Tower
High Rock Tower is a historic stone observation tower and former lighthouse in Lynn, Massachusetts, known for its panoramic coastal views and public park setting.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ |
| associatedWith | village of Siasconset ⓘ |
| automated | yes ⓘ |
| automationStatus | automated lighthouse ⓘ |
| builtBy | United States government ⓘ |
| category |
Buildings and structures in Nantucket, Massachusetts
ⓘ
Lighthouses in Massachusetts ⓘ |
| colorScheme | white and red horizontal bands ⓘ |
| constructionStartDate | 1848 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Nantucket County ⓘ |
| era | mid-19th century lighthouse ⓘ |
| focalHeight | approximately 158 feet above sea level ⓘ |
| function | guiding ships along treacherous waters off Nantucket ⓘ |
| guides | ships ⓘ |
| height | approximately 70 feet ⓘ |
| heritageStatus | historic landmark of Nantucket ⓘ |
| historicSignificance | one of the earliest lighthouses in the United States to receive a Fresnel lens ⓘ |
| lanternColor | black ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| lightRange | visible for many nautical miles ⓘ |
| locatedOn |
Nantucket
ⓘ
surface form:
Nantucket Island
|
| location | Siasconset, Nantucket, Massachusetts, United States ⓘ |
| managingOrganization | Sconset Trust ⓘ |
| marking | white tower with a single broad red band and black lantern ⓘ |
| material | brick ⓘ |
| near |
Sankaty Head Golf Club
ⓘ
Siasconset Bluff ⓘ |
| openToPublic | yes ⓘ |
| originalLensOrder | first-order Fresnel lens ⓘ |
| originalLensType | Fresnel lens ⓘ |
| overlooks | Atlantic Ocean ⓘ |
| ownership | Sconset Trust ⓘ |
| previousManagingOrganization | United States Coast Guard ⓘ |
| purpose | aid to navigation ⓘ |
| relocated | yes ⓘ |
| relocationDate | 2007 ⓘ |
| relocationDistance | approximately 400 feet inland ⓘ |
| relocationReason | threat of cliff erosion ⓘ |
| servesAs | coastal lighthouse ⓘ |
| situatedOn | eastern shore of Nantucket ⓘ |
| state | Massachusetts ⓘ |
| threatenedBy | coastal erosion ⓘ |
| tourism | popular tourist attraction on Nantucket ⓘ |
| towerShape | conical tower ⓘ |
| yearLit | 1850 ⓘ |
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: Sankaty Head Light Description of subject: 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.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Sankaty Head Lighthouse
this entity surface form:
Sankaty Head Lighthouse
this entity surface form:
Sankaty Head Lighthouse