Gravina Island
E692044
Gravina Island is a forested island in southeastern Alaska’s Inside Passage, known for its proximity to Ketchikan and its role in the debated “Bridge to Nowhere” project.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Gravina Island canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4296358 — 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: Gravina Island Context triple: [Tongass Narrows, separates, Gravina Island]
-
A.
Bellona Island
Bellona Island is a small, inhabited coral island in the Rennell and Bellona Province of the Solomon Islands, known for its raised atoll formation and Polynesian culture.
-
B.
Humboldt Island
Humboldt Island is a small artificial island in Berlin’s Spree River, historically associated with the Großer Wall area and situated near the city’s central museum and government district.
-
C.
Beausoleil Island
Beausoleil Island is a scenic island in Ontario’s Georgian Bay known for its forests, rocky shorelines, and role as a popular destination for outdoor recreation and Indigenous cultural heritage within the region.
-
D.
Maury Island
Maury Island is a small island in Puget Sound, Washington, known for its rural character, shoreline parks, and connection to the nearby community of Vashon Island.
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E.
Annette Island
Annette Island is a large, forested island in southeastern Alaska known for hosting the Metlakatla Indian Community, the only Native American reservation in the state.
- 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: Gravina Island Target entity description: Gravina Island is a forested island in southeastern Alaska’s Inside Passage, known for its proximity to Ketchikan and its role in the debated “Bridge to Nowhere” project.
-
A.
Bellona Island
Bellona Island is a small, inhabited coral island in the Rennell and Bellona Province of the Solomon Islands, known for its raised atoll formation and Polynesian culture.
-
B.
Humboldt Island
Humboldt Island is a small artificial island in Berlin’s Spree River, historically associated with the Großer Wall area and situated near the city’s central museum and government district.
-
C.
Beausoleil Island
Beausoleil Island is a scenic island in Ontario’s Georgian Bay known for its forests, rocky shorelines, and role as a popular destination for outdoor recreation and Indigenous cultural heritage within the region.
-
D.
Maury Island
Maury Island is a small island in Puget Sound, Washington, known for its rural character, shoreline parks, and connection to the nearby community of Vashon Island.
-
E.
Annette Island
Annette Island is a large, forested island in southeastern Alaska known for hosting the Metlakatla Indian Community, the only Native American reservation in the state.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | island ⓘ |
| belongsTo | United States Pacific coastal islands ⓘ |
| bridgeProposalFunding | federal earmark ⓘ |
| bridgeProposalPurpose | connect Ketchikan to Ketchikan International Airport ⓘ |
| bridgeProposalStatus | canceled ⓘ |
| country | United States of America ⓘ |
| explorationYear | 1793 ⓘ |
| exploredBy | George Vancouver NERFINISHED ⓘ |
| hasAirport | Ketchikan International Airport NERFINISHED ⓘ |
| hasClimate | maritime climate ⓘ |
| hasCoastlineType | rugged shoreline ⓘ |
| hasEcosystem | Tongass National Forest region NERFINISHED ⓘ |
| hasHumanUse |
limited residential development
ⓘ
recreation ⓘ transportation infrastructure ⓘ |
| hasLandCover | forest ⓘ |
| hasNearbyCity | Ketchikan, Alaska NERFINISHED ⓘ |
| hasNearbyFacility | Ketchikan International Airport terminal NERFINISHED ⓘ |
| hasNearbyFerryTerminal | Gravina Island ferry terminal NERFINISHED ⓘ |
| hasNearbyWaterway |
Clarence Strait
NERFINISHED
ⓘ
Tongass Narrows NERFINISHED ⓘ |
| hasPrecipitationPattern | high annual rainfall ⓘ |
| hasRegion | Alaska Panhandle NERFINISHED ⓘ |
| hasVegetation | temperate rainforest ⓘ |
| hasWildlife |
bald eagles
ⓘ
black bears ⓘ salmon ⓘ |
| isPartOfDebate |
U.S. federal earmark spending debate
ⓘ
U.S. transportation infrastructure priorities ⓘ |
| knownFor |
proposed Gravina Island Bridge
ⓘ
“Bridge to Nowhere” controversy NERFINISHED ⓘ |
| locatedIn |
Alaska
ⓘ
Inside Passage NERFINISHED ⓘ Ketchikan Gateway Borough NERFINISHED ⓘ southeastern Alaska NERFINISHED ⓘ |
| locatedInBodyOfWater | Clarence Strait NERFINISHED ⓘ |
| locatedNear | Ketchikan NERFINISHED ⓘ |
| namedAfter | Felice Gravina NERFINISHED ⓘ |
| namedBy | George Vancouver NERFINISHED ⓘ |
| partOf | Alexander Archipelago NERFINISHED ⓘ |
| politicalSubdivision |
Ketchikan Gateway Borough, Alaska
NERFINISHED
ⓘ
State of Alaska NERFINISHED ⓘ |
| primaryAccessMode |
airplane
ⓘ
boat ⓘ |
| separatedBy | Tongass Narrows NERFINISHED ⓘ |
| separatedFrom | Revillagigedo Island NERFINISHED ⓘ |
| timeZone | Alaska Time Zone ⓘ |
| transportConnection | ferry to Ketchikan ⓘ |
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: Gravina Island Description of subject: Gravina Island is a forested island in southeastern Alaska’s Inside Passage, known for its proximity to Ketchikan and its role in the debated “Bridge to Nowhere” project.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.