Eastern Point Lighthouse
E34310
Eastern Point Lighthouse is a historic coastal beacon in Gloucester, Massachusetts, guiding ships at the entrance to Gloucester Harbor on the Atlantic Ocean.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Eastern Point Lighthouse canonical | 7 |
| Eastern Point Light | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T90146 — 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: Eastern Point Lighthouse Context triple: [Gloucester, hasLandmark, Eastern Point Lighthouse]
-
A.
Round Island Lighthouse
Round Island Lighthouse is a historic red-and-white beacon located on Round Island in Michigan, guiding ships through the Straits of Mackinac in the Great Lakes.
-
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.
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.
-
D.
Big Red Lighthouse
Big Red Lighthouse is a historic, bright-red navigational beacon at the channel entrance to Lake Michigan in Holland, Michigan, and a well-known local icon.
-
E.
Gay Head Light
Gay Head Light is a historic lighthouse on the cliffs of Aquinnah, Martha’s Vineyard, known for guiding maritime traffic and its distinctive red-brick tower overlooking the Atlantic.
- 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: Eastern Point Lighthouse Target entity description: Eastern Point Lighthouse is a historic coastal beacon in Gloucester, Massachusetts, guiding ships at the entrance to Gloucester Harbor on the Atlantic Ocean.
-
A.
Round Island Lighthouse
Round Island Lighthouse is a historic red-and-white beacon located on Round Island in Michigan, guiding ships through the Straits of Mackinac in the Great Lakes.
-
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.
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.
-
D.
Big Red Lighthouse
Big Red Lighthouse is a historic, bright-red navigational beacon at the channel entrance to Lake Michigan in Holland, Michigan, and a well-known local icon.
-
E.
Gay Head Light
Gay Head Light is a historic lighthouse on the cliffs of Aquinnah, Martha’s Vineyard, known for guiding maritime traffic and its distinctive red-brick tower overlooking the Atlantic.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic place
ⓘ
lighthouse ⓘ navigational aid ⓘ |
| associatedStructure |
fog signal building
ⓘ
keeper’s house ⓘ oil house ⓘ |
| category |
Buildings and structures in Gloucester, Massachusetts
ⓘ
Lighthouses in Massachusetts ⓘ |
| city | Gloucester ⓘ |
| coordinates | approximately 42.583°N 70.664°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Essex County, Massachusetts ⓘ |
| currentTowerYear | 1890 ⓘ |
| firstLit | 1832 ⓘ |
| focalHeight | about 57 feet ⓘ |
| function | coastal light ⓘ |
| hasAccess | viewable from shore ⓘ |
| hasFogSignal | yes ⓘ |
| hasPhotographicSignificance | popular subject for maritime photography ⓘ |
| height | about 36 feet ⓘ |
| heritageDesignation | historic lighthouse ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| lightRange | about 20 nautical miles ⓘ |
| listedOn | National Register of Historic Places ⓘ |
| locatedAt | entrance to Gloucester Harbor ⓘ |
| locatedInProtectedArea |
Gloucester, Massachusetts, United States
ⓘ
surface form:
Eastern Point area of Gloucester
|
| locatedOn | Atlantic Ocean ⓘ |
| location |
Gloucester, Massachusetts, United States
ⓘ
surface form:
Gloucester, Massachusetts
|
| managingAgent | United States Coast Guard ⓘ |
| marking | white cylindrical tower ⓘ |
| nauticalChart | NOAA charts for Gloucester Harbor ⓘ |
| nearbyLandmark |
Brace Rock
ⓘ
Dog Bar Breakwater ⓘ |
| NRHPType | contributing property in a historic district ⓘ |
| ocean | Atlantic Ocean ⓘ |
| operatedBy | United States Coast Guard Aids to Navigation Team ⓘ |
| originalLensType | Fresnel lens ⓘ |
| ownedBy | United States Coast Guard ⓘ |
| powerSource | electric ⓘ |
| publicAccessToTower | generally closed ⓘ |
| purpose | to guide ships into Gloucester Harbor ⓘ |
| region | Cape Ann ⓘ |
| state | Massachusetts ⓘ |
| towerColor | white tower with black lantern ⓘ |
| towerMaterial | brick ⓘ |
| towerShape | cylindrical tower with lantern ⓘ |
| waterway | Gloucester Harbor ⓘ |
| yearBuilt | 1832 ⓘ |
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: Eastern Point Lighthouse Description of subject: Eastern Point Lighthouse is a historic coastal beacon in Gloucester, Massachusetts, guiding ships at the entrance to Gloucester Harbor on the Atlantic Ocean.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Gloucester, Massachusetts
this entity surface form:
Eastern Point Light