East Chop Lighthouse
E734195
East Chop Lighthouse is a historic 19th-century navigational beacon located on Martha’s Vineyard in Massachusetts, overlooking Vineyard Haven Harbor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| East Chop Lighthouse canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8406296 — 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: East Chop Lighthouse Context triple: [West Chop Lighthouse, relatedLighthouse, East Chop Lighthouse]
-
A.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
-
B.
North Lighthouse
North Lighthouse is a historic lighthouse located on the island of Lundy off the coast of Devon, England, serving as a navigational aid in the Bristol Channel.
-
C.
Simon-Loschen Lighthouse
The Simon-Loschen Lighthouse is a historic brick lighthouse in Bremerhaven, Germany, known as one of the oldest surviving land-based lighthouses on the German North Sea coast.
-
D.
Tahkuna Lighthouse
Tahkuna Lighthouse is a historic cast-iron lighthouse located on the northern tip of Hiiumaa Island in Estonia, known for being one of the tallest lighthouses in the country.
-
E.
Seven Foot Knoll Lighthouse
Seven Foot Knoll Lighthouse is a historic screw-pile lighthouse, originally built in 1855 at the mouth of the Patapsco River and now preserved as a maritime museum in Baltimore, Maryland.
- 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: East Chop Lighthouse Target entity description: East Chop Lighthouse is a historic 19th-century navigational beacon located on Martha’s Vineyard in Massachusetts, overlooking Vineyard Haven Harbor.
-
A.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
-
B.
North Lighthouse
North Lighthouse is a historic lighthouse located on the island of Lundy off the coast of Devon, England, serving as a navigational aid in the Bristol Channel.
-
C.
Simon-Loschen Lighthouse
The Simon-Loschen Lighthouse is a historic brick lighthouse in Bremerhaven, Germany, known as one of the oldest surviving land-based lighthouses on the German North Sea coast.
-
D.
Tahkuna Lighthouse
Tahkuna Lighthouse is a historic cast-iron lighthouse located on the northern tip of Hiiumaa Island in Estonia, known for being one of the tallest lighthouses in the country.
-
E.
Seven Foot Knoll Lighthouse
Seven Foot Knoll Lighthouse is a historic screw-pile lighthouse, originally built in 1855 at the mouth of the Patapsco River and now preserved as a maritime museum in Baltimore, Maryland.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ navigational aid ⓘ |
| addedToNationalRegisterOfHistoricPlaces | 1987 ⓘ |
| associatedWith | Martha’s Vineyard Museum tours ⓘ |
| automated | yes ⓘ |
| automatedSince | 1933 ⓘ |
| builtBy | United States Lighthouse Board ⓘ |
| coast | Atlantic coast of the United States ⓘ |
| constructionMaterial |
brick lining
ⓘ
cast-iron ⓘ |
| currentLensType | modern optic ⓘ |
| focalHeight | 79 feet ⓘ |
| hasCategory |
Buildings and structures in Oak Bluffs, Massachusetts
ⓘ
Lighthouses completed in 1878 ⓘ Lighthouses on the National Register of Historic Places in Massachusetts ⓘ Transportation buildings and structures in Dukes County, Massachusetts ⓘ |
| hasFeature | adjacent keeper’s house site ⓘ |
| height | 40 feet ⓘ |
| historicPeriod | 19th century ⓘ |
| lightCharacteristic | Flashing white every 6 seconds ⓘ |
| lightRange | 12 nautical miles ⓘ |
| locatedInCountry |
United States
ⓘ
linked to:
United States of America
|
| locatedInCounty | Dukes County, Massachusetts ⓘ |
| locatedInState | Massachusetts ⓘ |
| locatedOn | East Chop ⓘ |
| location |
Martha’s Vineyard
ⓘ
linked to:
Martha's Vineyard
Oak Bluffs, Massachusetts ⓘ
linked to:
Oak Bluffs
|
| managingOrganization |
Martha’s Vineyard Museum
ⓘ
U.S. Coast Guard ⓘ
linked to:
United States Coast Guard
|
| marking | white tower with black lantern ⓘ |
| nearbyCity |
Vineyard Haven, Massachusetts
ⓘ
linked to:
Vineyard Haven
|
| nearbyTown |
Oak Bluffs, Massachusetts
ⓘ
linked to:
Oak Bluffs
|
| NRHPLocation |
Oak Bluffs, Massachusetts
ⓘ
linked to:
Oak Bluffs
|
| NRHPType | building ⓘ |
| openToPublic | yes ⓘ |
| operatedBy |
U.S. Coast Guard
ⓘ
linked to:
United States Coast Guard
|
| originalLensType | Fresnel lens ⓘ |
| overlooks | Vineyard Haven Harbor ⓘ |
| ownedBy |
U.S. Coast Guard
ⓘ
linked to:
United States Coast Guard
|
| partOf | National Register of Historic Places ⓘ |
| precededBy | private wooden light tower ⓘ |
| publicAccess | grounds open, tower occasionally open ⓘ |
| purpose | aid to navigation for vessels entering Vineyard Haven Harbor ⓘ |
| region | New England ⓘ |
| situatedOn | a bluff above Vineyard Haven Harbor ⓘ |
| towerShape | cylindrical tower ⓘ |
| yearFirstLit | 1878 ⓘ |
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: East Chop Lighthouse Description of subject: East Chop Lighthouse is a historic 19th-century navigational beacon located on Martha’s Vineyard in Massachusetts, overlooking Vineyard Haven Harbor.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.