Long Island Head Light
E460441
Long Island Head Light is a historic lighthouse in Boston Harbor that has long served as a navigational aid for vessels entering and leaving the port of Boston.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Long Island Head Light canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4631966 — 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: Long Island Head Light Context triple: [Long Island (Boston Harbor), contains, Long Island Head Light]
-
A.
Montauk Point Lighthouse
Montauk Point Lighthouse is a historic, oceanfront lighthouse at the eastern tip of Long Island, New York, and one of the oldest and most iconic lighthouses in the United States.
-
B.
Chambers Island Light
Chambers Island Light is a historic lighthouse located on Chambers Island in Wisconsin’s Door County, serving as a navigational aid in Green Bay.
-
C.
Brant Point Light
Brant Point Light is a historic lighthouse on Nantucket Island, Massachusetts, guiding vessels into Nantucket Harbor and known as one of the oldest lighthouse sites in the United States.
-
D.
Long Point Light
Long Point Light is a historic lighthouse marking the entrance to Provincetown Harbor at the tip of Cape Cod, Massachusetts.
-
E.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
- 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: Long Island Head Light Target entity description: Long Island Head Light is a historic lighthouse in Boston Harbor that has long served as a navigational aid for vessels entering and leaving the port of Boston.
-
A.
Montauk Point Lighthouse
Montauk Point Lighthouse is a historic, oceanfront lighthouse at the eastern tip of Long Island, New York, and one of the oldest and most iconic lighthouses in the United States.
-
B.
Chambers Island Light
Chambers Island Light is a historic lighthouse located on Chambers Island in Wisconsin’s Door County, serving as a navigational aid in Green Bay.
-
C.
Brant Point Light
Brant Point Light is a historic lighthouse on Nantucket Island, Massachusetts, guiding vessels into Nantucket Harbor and known as one of the oldest lighthouse sites in the United States.
-
D.
Long Point Light
Long Point Light is a historic lighthouse marking the entrance to Provincetown Harbor at the tip of Cape Cod, Massachusetts.
-
E.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ navigational aid ⓘ |
| associatedWith | Boston Harbor Islands NERFINISHED ⓘ |
| constructionMaterial | brick ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Suffolk County NERFINISHED ⓘ |
| focalHeight | 140 feet ⓘ |
| function | guides ships through Boston Harbor ⓘ |
| hasFeature | attached keeper’s dwelling (historically) ⓘ |
| hasHeritageStatus | historic lighthouse ⓘ |
| height | 52 feet ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| locatedIn |
Boston Harbor
NERFINISHED
ⓘ
Boston, Massachusetts ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInProtectedArea | Boston Harbor Islands National Recreation Area NERFINISHED ⓘ |
| locatedOn | Long Island ⓘ |
| managingAgent | United States Coast Guard NERFINISHED ⓘ |
| marking | white tower ⓘ |
| nearbyCity | Boston NERFINISHED ⓘ |
| originalLensType | Fresnel lens NERFINISHED ⓘ |
| purpose | aid to navigation ⓘ |
| region | New England NERFINISHED ⓘ |
| servesAs |
navigational aid for vessels entering the port of Boston
ⓘ
navigational aid for vessels leaving the port of Boston ⓘ |
| state | Massachusetts ⓘ |
| towerShape | cylindrical tower ⓘ |
| waterbody | Boston Harbor NERFINISHED ⓘ |
| yearFirstLit | 1819 ⓘ |
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: Long Island Head Light Description of subject: Long Island Head Light is a historic lighthouse in Boston Harbor that has long served as a navigational aid for vessels entering and leaving the port of Boston.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.