Ten Pound Island Light
E34571
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ten Pound Island Light canonical | 4 |
| Ten Pound Island Lighthouse | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T90147 — 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: Ten Pound Island Light Context triple: [Gloucester, hasLandmark, Ten Pound Island Light]
-
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.
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B.
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.
-
C.
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.
-
D.
Eastern Point Lighthouse
Eastern Point Lighthouse is a historic coastal beacon in Gloucester, Massachusetts, guiding ships at the entrance to Gloucester Harbor on the Atlantic Ocean.
-
E.
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.
- 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: Ten Pound Island Light Target entity description: 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.
-
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.
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.
-
C.
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.
-
D.
Eastern Point Lighthouse
Eastern Point Lighthouse is a historic coastal beacon in Gloucester, Massachusetts, guiding ships at the entrance to Gloucester Harbor on the Atlantic Ocean.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
historic place
ⓘ
lighthouse ⓘ |
| access | by boat only ⓘ |
| associatedWithArtist | Winslow Homer ⓘ |
| associatedWithIndustry | fishing industry ⓘ |
| associatedWithPort | Gloucester fishing port ⓘ |
| automationYear | 1989 ⓘ |
| bodyOfWater | Gloucester Harbor ⓘ |
| category |
Buildings and structures in Gloucester, Massachusetts
ⓘ
Lighthouses in Massachusetts ⓘ |
| city |
Gloucester, Massachusetts
ⓘ
linked to:
Gloucester, Massachusetts, United States
|
| country |
United States
ⓘ
linked to:
United States of America
|
| deactivationYear | 1956 ⓘ |
| hasConstructionYear | 1881 ⓘ |
| hasFocalHeight | approximately 56 feet ⓘ |
| hasFogSignal | yes ⓘ |
| hasKeeperDwelling | yes ⓘ |
| hasLantern | yes ⓘ |
| hasMarking | white tower with black lantern ⓘ |
| heritageStatus | listed on the National Register of Historic Places ⓘ |
| historicUse | harbor approach light ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| lightRange | about 9 nautical miles ⓘ |
| locatedIn |
Essex County, Massachusetts
ⓘ
Gloucester Harbor ⓘ Gloucester, Massachusetts ⓘ
linked to:
Gloucester, Massachusetts, United States
Massachusetts ⓘ Ten Pound Island ⓘ United States ⓘ
linked to:
United States of America
|
| locatedOnIsland | Ten Pound Island ⓘ |
| managingAgent | United States Coast Guard ⓘ |
| material | brick ⓘ |
| notableFor |
association with American maritime art
ⓘ
role in guiding vessels into Gloucester Harbor ⓘ |
| NRHPLocation | Massachusetts ⓘ |
| NRHPType | building ⓘ |
| openToPublic | viewable from shore ⓘ |
| originalManagingAgent | United States Lighthouse Service ⓘ |
| purpose |
to aid navigation for fishing vessels
ⓘ
to guide maritime traffic into Gloucester Harbor ⓘ |
| reactivationYear | 1989 ⓘ |
| region | New England ⓘ |
| state | Massachusetts ⓘ |
| towerHeight | approximately 30 feet ⓘ |
| towerShape | cylindrical tower ⓘ |
| yearCurrentTowerFirstLit | 1881 ⓘ |
| yearFirstLit | 1821 ⓘ |
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: Ten Pound Island Light Description of subject: 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.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.