Bug Light (Portland Breakwater Light)
E168956
Bug Light, officially known as Portland Breakwater Light, is a small historic lighthouse in South Portland, Maine, noted for its distinctive Greek Revival–style architecture and role in guiding ships into Portland Harbor.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Portland Breakwater Light | 3 |
| Bug Light (Portland Breakwater Light) canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1478549 — 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: Bug Light (Portland Breakwater Light) Context triple: [Casco Bay, hasLighthouse, Bug Light (Portland Breakwater Light)]
-
A.
Cape Meares Lighthouse
Cape Meares Lighthouse is a historic, cliff-top beacon on the northern Oregon Coast known for its distinctive short tower and panoramic views of the Pacific Ocean.
-
B.
Umpqua River Lighthouse
Umpqua River Lighthouse is a historic coastal beacon in Oregon known for its distinctive red-and-white flashing Fresnel lens and scenic views over the Pacific Ocean.
-
C.
Portland Bill lighthouse
Portland Bill Lighthouse is a prominent coastal beacon on the Isle of Portland in Dorset, England, renowned for guiding ships through the hazardous waters of the English Channel.
-
D.
Baron Bliss Lighthouse
Baron Bliss Lighthouse is a prominent coastal beacon and memorial in Belize, honoring the English benefactor Baron Bliss and serving as a notable historic symbol of Belize City.
-
E.
Portland Head Light
Portland Head Light is a historic and picturesque lighthouse located on Cape Elizabeth’s rocky coast near Portland, Maine, and is one of the most photographed lighthouses in the United States.
- 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: Bug Light (Portland Breakwater Light) Target entity description: Bug Light, officially known as Portland Breakwater Light, is a small historic lighthouse in South Portland, Maine, noted for its distinctive Greek Revival–style architecture and role in guiding ships into Portland Harbor.
-
A.
Cape Meares Lighthouse
Cape Meares Lighthouse is a historic, cliff-top beacon on the northern Oregon Coast known for its distinctive short tower and panoramic views of the Pacific Ocean.
-
B.
Umpqua River Lighthouse
Umpqua River Lighthouse is a historic coastal beacon in Oregon known for its distinctive red-and-white flashing Fresnel lens and scenic views over the Pacific Ocean.
-
C.
Portland Bill lighthouse
Portland Bill Lighthouse is a prominent coastal beacon on the Isle of Portland in Dorset, England, renowned for guiding ships through the hazardous waters of the English Channel.
-
D.
Baron Bliss Lighthouse
Baron Bliss Lighthouse is a prominent coastal beacon and memorial in Belize, honoring the English benefactor Baron Bliss and serving as a notable historic symbol of Belize City.
-
E.
Portland Head Light
Portland Head Light is a historic and picturesque lighthouse located on Cape Elizabeth’s rocky coast near Portland, Maine, and is one of the most photographed lighthouses in the United States.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
aids to navigation
ⓘ
historic place ⓘ lighthouse ⓘ |
| architecturalStyle |
Greek Revival architecture
ⓘ
surface form:
Greek Revival
Greek Revival–style ⓘ |
| automated | 1934 ⓘ |
| city |
South Portland, Maine
ⓘ
surface form:
South Portland
|
| constructionMaterial |
cast iron
ⓘ
granite ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse |
historic attraction
ⓘ
navigational aid ⓘ |
| deactivated | 1942 ⓘ |
| designedBy | Thomas U. Walter NERFINISHED ⓘ |
| focalHeight | 30 feet ⓘ |
| function | guides ships into Portland Harbor ⓘ |
| hasFeature |
ornamental cast-iron detailing
ⓘ
six Corinthian columns ⓘ |
| hasGallery | yes ⓘ |
| hasLantern | yes ⓘ |
| hasNickname | Bug Light ⓘ |
| hasOfficialName |
Bug Light (Portland Breakwater Light)
self-link
ⓘ
surface form:
Portland Breakwater Light
|
| height | 26 feet ⓘ |
| inspiredBy |
Lysicrates Monument
ⓘ
surface form:
Choragic Monument of Lysicrates
|
| lightCharacteristic | flashing white ⓘ |
| lightRange | 9 nautical miles ⓘ |
| listedOn | National Register of Historic Places ⓘ |
| locatedIn |
Cumberland County, Maine
ⓘ
South Portland, Maine ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInPark | Bug Light Park ⓘ |
| managingAgent |
South Portland, Maine
ⓘ
surface form:
City of South Portland
|
| marking | white tower with black trim ⓘ |
| nearbyCity | Portland, Maine ⓘ |
| nrhpListingYear | 1973 ⓘ |
| nrhpReferenceNumber | 73000121 ⓘ |
| nrhpType | structure ⓘ |
| openToPublic | yes ⓘ |
| originalLensType | sixth-order Fresnel lens ⓘ |
| ownedBy |
South Portland, Maine
ⓘ
surface form:
City of South Portland
|
| reactivated | 2002 ⓘ |
| region | New England ⓘ |
| situatedOn | Portland Harbor ⓘ |
| state | Maine ⓘ |
| towerShape | cylindrical tower ⓘ |
| waterway | Casco Bay ⓘ |
| yearBuilt | 1875 ⓘ |
| yearLit | 1875 ⓘ |
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: Bug Light (Portland Breakwater Light) Description of subject: Bug Light, officially known as Portland Breakwater Light, is a small historic lighthouse in South Portland, Maine, noted for its distinctive Greek Revival–style architecture and role in guiding ships into Portland Harbor.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
Bug Light (Portland Breakwater Light)
→
hasOfficialName
→
Bug Light (Portland Breakwater Light)
self-link
ⓘ
subject surface form:
Portland Breakwater Light
this entity surface form:
Portland Breakwater Light
this entity surface form:
Portland Breakwater Light
subject surface form:
Portland Harbor
this entity surface form:
Portland Breakwater Light
subject surface form:
Portland Harbor