Race Point Light
E236279
Race Point Light is a historic lighthouse located at the northern tip of Cape Cod in Provincetown, Massachusetts, guiding ships near the treacherous waters off Race Point.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Race Point Light canonical | 6 |
| Race Point Light Station | 1 |
| Race Point Light Station, Inc. | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2145758 — 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: Race Point Light Context triple: [Race Point Beach, adjacentTo, Race Point Light]
-
A.
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.
-
B.
Nauset Light
Nauset Light is a historic, red-and-white lighthouse on Cape Cod in Massachusetts, known as an iconic coastal landmark and symbol of the region.
-
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.
Spring Point Ledge Light
Spring Point Ledge Light is a historic caisson-style lighthouse off South Portland, Maine, that marks a dangerous ledge in Casco Bay and guides vessels entering Portland Harbor.
-
E.
McGulpin Point Lighthouse
McGulpin Point Lighthouse is a historic 19th-century lighthouse on the Straits of Mackinac in northern Michigan, preserved today as a heritage site and museum.
- 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: Race Point Light Target entity description: Race Point Light is a historic lighthouse located at the northern tip of Cape Cod in Provincetown, Massachusetts, guiding ships near the treacherous waters off Race Point.
-
A.
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.
-
B.
Nauset Light
Nauset Light is a historic, red-and-white lighthouse on Cape Cod in Massachusetts, known as an iconic coastal landmark and symbol of the region.
-
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.
Spring Point Ledge Light
Spring Point Ledge Light is a historic caisson-style lighthouse off South Portland, Maine, that marks a dangerous ledge in Casco Bay and guides vessels entering Portland Harbor.
-
E.
McGulpin Point Lighthouse
McGulpin Point Lighthouse is a historic 19th-century lighthouse on the Straits of Mackinac in northern Michigan, preserved today as a heritage site and museum.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
historic lighthouse
ⓘ
lighthouse ⓘ |
| accessibleBy |
four-wheel drive vehicle
ⓘ
hiking ⓘ sand road ⓘ |
| automated | 1972 ⓘ |
| constructionMaterial |
brick lining
ⓘ
cast iron ⓘ |
| coordinates | approximately 42.058°N 70.247°W ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| currentLens | modern optic ⓘ |
| focalHeight | about 70 feet ⓘ |
| foundation | granite blocks ⓘ |
| hasComponent |
assistant keeper’s house
ⓘ
keeper’s house ⓘ oil house ⓘ whistle house ⓘ |
| hasFogSignal | yes ⓘ |
| height | about 45 feet ⓘ |
| heritageStatus | historic maritime structure ⓘ |
| lightCharacteristic |
flashing white light
ⓘ
red sector ⓘ |
| listedOn | National Register of Historic Places ⓘ |
| locatedAt | Race Point ⓘ |
| locatedIn |
Barnstable County, Massachusetts
ⓘ
Cape Cod National Seashore ⓘ Massachusetts ⓘ Provincetown, Massachusetts ⓘ
linked to:
Provincetown
United States ⓘ
linked to:
United States of America
|
| locatedNear |
Atlantic Ocean
ⓘ
Cape Cod Bay ⓘ treacherous shoals off Race Point ⓘ |
| locatedOn | Cape Cod ⓘ |
| managingAgent |
Race Point Light Station, Inc.
ⓘ
linked to:
Race Point Light
United States Coast Guard ⓘ |
| marking | white tower with black lantern ⓘ |
| NRHPListingYear | 1987 ⓘ |
| NRHPType | building ⓘ |
| offers | overnight accommodations ⓘ |
| originalLens |
Fourth order Fresnel lens
ⓘ
linked to:
Fresnel lens
|
| partOf |
Race Point Light Station
ⓘ
linked to:
Race Point Light
|
| purpose | to guide ships near the waters off Race Point ⓘ |
| range | approximately 12 nautical miles ⓘ |
| replacedEarlierLight | yes ⓘ |
| state | Massachusetts ⓘ |
| towerShape | cylindrical tower ⓘ |
| town | Provincetown ⓘ |
| usedFor | aids to navigation ⓘ |
| yearEstablished | 1816 ⓘ |
| yearLit | 1876 ⓘ |
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: Race Point Light Description of subject: Race Point Light is a historic lighthouse located at the northern tip of Cape Cod in Provincetown, Massachusetts, guiding ships near the treacherous waters off Race Point.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Race Point Light
linked to: Race Point Light