Montauk Point Lighthouse
E351614
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Montauk Point Lighthouse canonical | 10 |
How this entity was disambiguated
This entity first appeared as the object of triple T3351886 — 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: Montauk Point Lighthouse Context triple: [Montauk, knownFor, Montauk Point Lighthouse]
-
A.
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.
-
B.
Long Point Light
Long Point Light is a historic lighthouse marking the entrance to Provincetown Harbor at the tip of Cape Cod, Massachusetts.
-
C.
Sandy Hook Lighthouse
Sandy Hook Lighthouse is the oldest surviving lighthouse in the United States, located at the tip of New Jersey’s Sandy Hook peninsula and historically guiding ships into New York Harbor.
-
D.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
-
E.
Crown Point Lighthouse
Crown Point Lighthouse is a historic navigational beacon on Lake Champlain in New York, notable for its early 20th-century memorial tower design and role in guiding maritime traffic.
- 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: Montauk Point Lighthouse Target entity description: 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.
-
A.
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.
-
B.
Long Point Light
Long Point Light is a historic lighthouse marking the entrance to Provincetown Harbor at the tip of Cape Cod, Massachusetts.
-
C.
Sandy Hook Lighthouse
Sandy Hook Lighthouse is the oldest surviving lighthouse in the United States, located at the tip of New Jersey’s Sandy Hook peninsula and historically guiding ships into New York Harbor.
-
D.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
-
E.
Crown Point Lighthouse
Crown Point Lighthouse is a historic navigational beacon on Lake Champlain in New York, notable for its early 20th-century memorial tower design and role in guiding maritime traffic.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ tourist attraction ⓘ |
| authorizedBy | George Washington ⓘ |
| builtDuring | presidency of George Washington ⓘ |
| completionDate | 1797 ⓘ |
| constructionStartDate | 1796 ⓘ |
| coordinates | approximately 41.071°N 71.857°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse |
aid to navigation
ⓘ
museum ⓘ |
| focalHeight | approximately 168 feet ⓘ |
| hasMuseumExhibits |
local Montauk history
ⓘ
maritime history ⓘ whaling history ⓘ |
| height | approximately 110 feet ⓘ |
| heritageDesignation |
National Historic Landmark
ⓘ
National Register of Historic Places ⓘ
surface form:
National Register of Historic Places listing
|
| laterLensType | Fresnel lens ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| lightRange | approximately 19 nautical miles ⓘ |
| locatedAt | eastern tip of Long Island ⓘ |
| locatedIn |
Long Island
ⓘ
Montauk ⓘ
surface form:
Montauk, New York
New York State ⓘ Suffolk County, New York ⓘ East Hampton ⓘ
surface form:
Town of East Hampton
United States of America ⓘ
surface form:
United States
|
| locatedNear | Atlantic Ocean ⓘ |
| locatedWithin | Montauk Point State Park ⓘ |
| maintainedBy | United States Coast Guard ⓘ |
| marking | white tower with a brown band and black lantern ⓘ |
| material |
brick
ⓘ
stone ⓘ |
| NHLDesignationDate | 2012 ⓘ |
| NRHPListingDate | 1969 ⓘ |
| openToPublic | yes ⓘ |
| operator | Montauk Historical Society ⓘ |
| originalLensType | whale oil lamps with reflectors ⓘ |
| owner | Montauk Historical Society ⓘ |
| regionServed |
Atlantic shipping lanes off Long Island
ⓘ
approaches to Long Island Sound ⓘ |
| shape | conical tower ⓘ |
| significance |
iconic symbol of Long Island
ⓘ
oldest lighthouse in New York State ⓘ one of the oldest lighthouses in the United States ⓘ |
| state | New York ⓘ |
| towerHeight | approximately 86 feet ⓘ |
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: Montauk Point Lighthouse Description of subject: 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.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Montauk