Ram Island Ledge Light
E176516
Ram Island Ledge Light is an offshore granite lighthouse marking dangerous ledges at the entrance to Portland Harbor in Casco Bay, Maine.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ram Island Ledge Light canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1478550 — 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: Ram Island Ledge Light Context triple: [Casco Bay, hasLighthouse, Ram Island Ledge Light]
-
A.
Ten Pound Island Light
Ten Pound Island Light is a historic lighthouse located on Ten Pound Island in Gloucester Harbor, Massachusetts, that once guided maritime traffic into the busy fishing port.
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B.
Raspberry Island Light
Raspberry Island Light is a historic lighthouse located on Raspberry Island in Wisconsin’s Apostle Islands, guiding navigation on Lake Superior.
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C.
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.
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D.
Sand Island Light
Sand Island Light is a historic lighthouse located on Sand Island in Lake Superior, known for guiding ships through the Apostle Islands region of Wisconsin.
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E.
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.
- 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: Ram Island Ledge Light Target entity description: Ram Island Ledge Light is an offshore granite lighthouse marking dangerous ledges at the entrance to Portland Harbor in Casco Bay, Maine.
-
A.
Ten Pound Island Light
Ten Pound Island Light is a historic lighthouse located on Ten Pound Island in Gloucester Harbor, Massachusetts, that once guided maritime traffic into the busy fishing port.
-
B.
Raspberry Island Light
Raspberry Island Light is a historic lighthouse located on Raspberry Island in Wisconsin’s Apostle Islands, guiding navigation on Lake Superior.
-
C.
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.
-
D.
Sand Island Light
Sand Island Light is a historic lighthouse located on Sand Island in Lake Superior, known for guiding ships through the Apostle Islands region of Wisconsin.
-
E.
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.
- F. None of above. chosen
Statements (48)
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: Ram Island Ledge Light Description of subject: Ram Island Ledge Light is an offshore granite lighthouse marking dangerous ledges at the entrance to Portland Harbor in Casco Bay, Maine.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.