Pomham Rocks Lighthouse
E857133
Pomham Rocks Lighthouse is a historic 19th-century lighthouse situated on a small rocky island in the Providence River, serving as a notable maritime landmark and preserved heritage site.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pomham Rocks Lighthouse canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10346526 — 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: Pomham Rocks Lighthouse Context triple: [East Providence, Rhode Island, hasLandmark, Pomham Rocks Lighthouse]
-
A.
Chicken Rock Lighthouse
Chicken Rock Lighthouse is an offshore lighthouse near the Calf of Man that warns ships of the hazardous rocks and strong currents in the surrounding waters.
-
B.
Peggy’s Point Lighthouse
Peggy’s Point Lighthouse is an iconic red-and-white coastal beacon in Nova Scotia, Canada, famed as one of the country’s most photographed and visited lighthouses.
-
C.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
-
D.
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.
-
E.
Acre Lighthouse
Acre Lighthouse is a coastal beacon in the historic port city of Acre, Israel, guiding maritime traffic along the Mediterranean shoreline.
- 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: Pomham Rocks Lighthouse Target entity description: Pomham Rocks Lighthouse is a historic 19th-century lighthouse situated on a small rocky island in the Providence River, serving as a notable maritime landmark and preserved heritage site.
-
A.
Chicken Rock Lighthouse
Chicken Rock Lighthouse is an offshore lighthouse near the Calf of Man that warns ships of the hazardous rocks and strong currents in the surrounding waters.
-
B.
Peggy’s Point Lighthouse
Peggy’s Point Lighthouse is an iconic red-and-white coastal beacon in Nova Scotia, Canada, famed as one of the country’s most photographed and visited lighthouses.
-
C.
West Chop Lighthouse
West Chop Lighthouse is a historic navigational beacon located on the West Chop headland in Vineyard Haven, Martha’s Vineyard, Massachusetts.
-
D.
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.
-
E.
Acre Lighthouse
Acre Lighthouse is a coastal beacon in the historic port city of Acre, Israel, guiding maritime traffic along the Mediterranean shoreline.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ maritime navigational aid ⓘ |
| 19thCenturyStructure | true ⓘ |
| architect | Albert Dow ⓘ |
| attachedTo | keeper's house ⓘ |
| automated | 1974 ⓘ |
| category |
Buildings and structures in East Providence, Rhode Island
ⓘ
Lighthouses in Rhode Island ⓘ Tourist attractions in Providence County, Rhode Island ⓘ Transportation buildings and structures in Providence County, Rhode Island ⓘ |
| city | East Providence ⓘ |
| constructionCompleted | 1871 ⓘ |
| constructionMaterial | wood ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| currentLens | modern optic ⓘ |
| deactivated | 1974 ⓘ |
| designedBy | Albert Dow ⓘ |
| focalHeight | 54 feet ⓘ |
| foundation | granite block foundation ⓘ |
| function | aid to navigation ⓘ |
| hasAccess | boat only ⓘ |
| height | 40 feet ⓘ |
| heritageStatus | preserved historic lighthouse ⓘ |
| lanternColor | black ⓘ |
| lightCharacteristic | Flashing white light ⓘ |
| locatedIn |
East Providence, Rhode Island
ⓘ
Providence County, Rhode Island ⓘ Providence River ⓘ Rhode Island ⓘ United States ⓘ
linked to:
United States of America
|
| locatedOn |
Pomham Rocks
ⓘ
small rocky island ⓘ |
| managedBy | Friends of Pomham Rocks Lighthouse ⓘ |
| marking | white tower with red roof ⓘ |
| near |
Narragansett Bay
ⓘ
Providence, Rhode Island ⓘ
linked to:
Providence, Rhode Island, United States
|
| notableFor | being one of the last surviving lighthouses in upper Narragansett Bay ⓘ |
| openForTours | seasonal ⓘ |
| operatedBy | United States Coast Guard ⓘ |
| originalLens | sixth-order Fresnel lens ⓘ |
| ownedBy | American Lighthouse Foundation ⓘ |
| reactivated | 2006 ⓘ |
| restored | early 21st century ⓘ |
| state | Rhode Island ⓘ |
| towerShape | square tower ⓘ |
| waterway | Providence River ⓘ |
| yearBuilt | 1871 ⓘ |
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: Pomham Rocks Lighthouse Description of subject: Pomham Rocks Lighthouse is a historic 19th-century lighthouse situated on a small rocky island in the Providence River, serving as a notable maritime landmark and preserved heritage site.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.