Cape Elizabeth Light
E655723
Cape Elizabeth Light is a historic twin lighthouse station on Cape Elizabeth, Maine, that aids navigation along the rocky Atlantic coast near Portland.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Cape Elizabeth Light canonical | 3 |
| Cape Elizabeth Lights | 2 |
| Cape Elizabeth Light (eastern tower) | 1 |
| Cape Elizabeth Light (western tower) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7270515 — 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: Cape Elizabeth Light Context triple: [Cape Elizabeth, Maine, United States, contains, Cape Elizabeth Light]
-
A.
Portsmouth Harbor Lighthouse
Portsmouth Harbor Lighthouse is a historic coastal beacon in New Castle, New Hampshire, that has guided ships at the mouth of the Piscataqua River for centuries and is now a preserved maritime landmark.
-
B.
Bass Harbor Head Light
Bass Harbor Head Light is a historic lighthouse perched on rugged cliffs at the southwestern tip of Mount Desert Island in Maine, overlooking the entrance to Bass Harbor.
-
C.
Nobska Light
Nobska Light is a historic lighthouse on Cape Cod that overlooks Vineyard Sound and serves as a prominent maritime navigational aid and local landmark.
-
D.
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.
-
E.
Pemaquid Point Lighthouse
Pemaquid Point Lighthouse is a historic coastal beacon in Maine known for its dramatic rocky shoreline setting and iconic New England lighthouse architecture.
- 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: Cape Elizabeth Light Target entity description: Cape Elizabeth Light is a historic twin lighthouse station on Cape Elizabeth, Maine, that aids navigation along the rocky Atlantic coast near Portland.
-
A.
Portsmouth Harbor Lighthouse
Portsmouth Harbor Lighthouse is a historic coastal beacon in New Castle, New Hampshire, that has guided ships at the mouth of the Piscataqua River for centuries and is now a preserved maritime landmark.
-
B.
Bass Harbor Head Light
Bass Harbor Head Light is a historic lighthouse perched on rugged cliffs at the southwestern tip of Mount Desert Island in Maine, overlooking the entrance to Bass Harbor.
-
C.
Nobska Light
Nobska Light is a historic lighthouse on Cape Cod that overlooks Vineyard Sound and serves as a prominent maritime navigational aid and local landmark.
-
D.
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.
-
E.
Pemaquid Point Lighthouse
Pemaquid Point Lighthouse is a historic coastal beacon in Maine known for its dramatic rocky shoreline setting and iconic New England lighthouse architecture.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
lighthouse
ⓘ
twin lighthouse station ⓘ |
| adjacentMunicipality | Town of Cape Elizabeth ⓘ |
| alsoKnownAs |
Cape Elizabeth Lights
ⓘ
linked to:
Cape Elizabeth Light
Two Lights ⓘ |
| associatedWith |
United States Lighthouse Service
ⓘ
shipping routes to Portland, Maine ⓘ |
| category |
Buildings and structures in Cape Elizabeth, Maine
ⓘ
Lighthouses in Maine ⓘ Transportation in Cumberland County, Maine ⓘ |
| constructionMaterial |
brick
ⓘ
cast iron ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| function | aids navigation ⓘ |
| hasPart |
East Tower
ⓘ
West Tower ⓘ |
| hasViewOf |
Atlantic Ocean
ⓘ
Portland Harbor approaches ⓘ |
| heritageStatus | historic lighthouse station ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| locatedIn |
Cape Elizabeth, Maine
ⓘ
linked to:
Cape Elizabeth, Maine, United States
Cumberland County, Maine ⓘ |
| locatedInRegion | New England ⓘ |
| locatedInState | Maine ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| locatedNear | Portland, Maine ⓘ |
| locatedOn |
Atlantic Ocean
ⓘ
Two Lights Road ⓘ |
| locatedOnCoast | rocky Atlantic coast ⓘ |
| locatedOnHeadland | Cape Elizabeth ⓘ |
| managingAgent | United States Coast Guard ⓘ |
| marking | white tower ⓘ |
| nauticalContext | aids coastal navigation along southern Maine coast ⓘ |
| navigationalArea | Gulf of Maine ⓘ |
| nearbyProtectedArea | Two Lights State Park ⓘ |
| originalOpticType | First-order Fresnel lens ⓘ |
| ownedBy |
United States government (active tower)
ⓘ
linked to:
United States government
|
| powerSource | electric ⓘ |
| purpose |
to mark approach to Portland, Maine
ⓘ
to warn mariners of rocky coast ⓘ |
| replaced | earlier light station from 1828 ⓘ |
| servesHarbor | Portland Harbor ⓘ |
| status |
active aid to navigation (east tower)
ⓘ
inactive (west tower) ⓘ |
| towerShape | conical tower ⓘ |
| yearLit | 1874 ⓘ |
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: Cape Elizabeth Light Description of subject: Cape Elizabeth Light is a historic twin lighthouse station on Cape Elizabeth, Maine, that aids navigation along the rocky Atlantic coast near Portland.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Cape Elizabeth Light
linked to: Cape Elizabeth Light
linked to: Cape Elizabeth Light
linked to: Cape Elizabeth Light