Machias Seal Island
E691419
Machias Seal Island is a small, remote island in the Gulf of Maine known for its rich seabird colonies—especially Atlantic puffins—and for being the subject of a longstanding territorial dispute between Canada and the United States.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Machias Seal Island canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7752807 — 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: Machias Seal Island Context triple: [Grand Manan Island, hasNearbyIsland, Machias Seal Island]
-
A.
Naushon Island
Naushon Island is a large privately owned island off the coast of Massachusetts, known for its restricted access, natural landscapes, and role as part of the Elizabeth Islands chain.
-
B.
Smuttynose Island
Smuttynose Island is a small, historically notable island in the Isles of Shoals off the coasts of New Hampshire and Maine, known for its rugged landscape and the infamous 1873 Smuttynose murders.
-
C.
West Sister Island
West Sister Island is a small, heavily protected wildlife refuge in Lake Erie known for its significant nesting colonies of herons and egrets.
-
D.
Matinicus Isle, Maine
Matinicus Isle, Maine is a remote, sparsely populated island community in the Gulf of Maine known for its long-standing lobstering tradition and limited access by state-operated ferry or small aircraft.
-
E.
Unimak Island
Unimak Island is the largest and easternmost island in Alaska’s Aleutian chain, known for its volcanic peaks and rich wildlife.
- 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: Machias Seal Island Target entity description: Machias Seal Island is a small, remote island in the Gulf of Maine known for its rich seabird colonies—especially Atlantic puffins—and for being the subject of a longstanding territorial dispute between Canada and the United States.
-
A.
Naushon Island
Naushon Island is a large privately owned island off the coast of Massachusetts, known for its restricted access, natural landscapes, and role as part of the Elizabeth Islands chain.
-
B.
Smuttynose Island
Smuttynose Island is a small, historically notable island in the Isles of Shoals off the coasts of New Hampshire and Maine, known for its rugged landscape and the infamous 1873 Smuttynose murders.
-
C.
West Sister Island
West Sister Island is a small, heavily protected wildlife refuge in Lake Erie known for its significant nesting colonies of herons and egrets.
-
D.
Matinicus Isle, Maine
Matinicus Isle, Maine is a remote, sparsely populated island community in the Gulf of Maine known for its long-standing lobstering tradition and limited access by state-operated ferry or small aircraft.
-
E.
Unimak Island
Unimak Island is the largest and easternmost island in Alaska’s Aleutian chain, known for its volcanic peaks and rich wildlife.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
island
ⓘ
seabird colony ⓘ |
| administeredAs | Migratory Bird Sanctuary ⓘ |
| administeredBy | Canada ⓘ |
| countryClaimedBy |
Canada
ⓘ
United States ⓘ
linked to:
United States of America
|
| disputeInvolves |
fishing rights
ⓘ
maritime boundary ⓘ |
| ecoregion | cold-temperate marine environment ⓘ |
| hasAccessRestriction | controlled landing permits ⓘ |
| hasAlternativeClassification |
border island
ⓘ
disputed island between Canada and the United States ⓘ offshore island of New Brunswick ⓘ |
| hasConservationStatus | protected area ⓘ |
| hasHabitatType |
coastal grassland
ⓘ
rocky island ⓘ |
| hasHumanPresence |
lighthouse keepers
ⓘ
seasonal researchers ⓘ seasonal tour operators ⓘ |
| hasLegalFramework | Migratory Birds Convention between Canada and the United States ⓘ |
| hasLighthouse | Machias Seal Island Lighthouse ⓘ |
| hasMainEconomicActivity |
birdwatching tours
ⓘ
ecotourism ⓘ |
| hasNavigationRole | aid to navigation in the Gulf of Maine ⓘ |
| hasPrimarySpecies |
Arctic tern
ⓘ
Atlantic puffin ⓘ common eider ⓘ common murre ⓘ razorbill ⓘ |
| hasTerritorialStatus | disputed territory ⓘ |
| importantFor |
Atlantic puffin conservation
ⓘ
seabird breeding ⓘ |
| knownFor |
Atlantic puffin colony
ⓘ
birdwatching tourism ⓘ rich seabird colonies ⓘ |
| lighthouseOperatedBy | Canadian Coast Guard ⓘ |
| locatedIn |
Bay of Fundy region
ⓘ
linked to:
Bay of Fundy
Gulf of Maine ⓘ |
| nearbyCountry |
Canada
ⓘ
United States ⓘ
linked to:
United States of America
|
| nearbyStateOrProvince |
Maine
ⓘ
New Brunswick ⓘ |
| partOf |
Canada–United States border dispute
ⓘ
linked to:
United States–Canada maritime boundary
|
| protectedBy | Canadian Wildlife Service ⓘ |
| seaArea |
North Atlantic Ocean
ⓘ
linked to:
North Atlantic
|
| subjectOf |
Canada–United States diplomatic discussions
ⓘ
linked to:
Canada–United States relations
|
| uninhabitedBy | permanent civilian population ⓘ |
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: Machias Seal Island Description of subject: Machias Seal Island is a small, remote island in the Gulf of Maine known for its rich seabird colonies—especially Atlantic puffins—and for being the subject of a longstanding territorial dispute between Canada and the United States.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.