Oshima Subprefecture
E752776
Oshima Subprefecture is an administrative region in southern Hokkaido, Japan, that includes the city of Hakodate and surrounding areas.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Oshima Subprefecture canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T8580559 — 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: Oshima Subprefecture Context triple: [Hakodate, locatedIn, Oshima Subprefecture]
-
A.
Kamikawa Subprefecture
Kamikawa Subprefecture is an administrative division in central Hokkaido, Japan, known for its mountainous landscapes, national parks, and popular tourist destinations such as the Furano and Biei areas.
-
B.
Tokachi Subprefecture
Tokachi Subprefecture is an administrative region in eastern Hokkaido, Japan, known for its expansive agricultural lands, dairy farming, and natural hot springs.
-
C.
Sōya Subprefecture
Sōya Subprefecture is the northernmost subprefecture of Japan’s Hokkaido region, encompassing remote coastal areas and serving as an administrative center for cities such as Wakkanai.
-
D.
Ogasawara Subprefecture
Ogasawara Subprefecture is an administrative division of Tokyo Metropolis in Japan that governs the remote Ogasawara (Bonin) Islands, including Iwo Jima.
-
E.
Kushiro Subprefecture
Kushiro Subprefecture is an administrative region in eastern Hokkaido, Japan, known for its rich wetlands, wildlife, and protected natural areas.
- 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: Oshima Subprefecture Target entity description: Oshima Subprefecture is an administrative region in southern Hokkaido, Japan, that includes the city of Hakodate and surrounding areas.
-
A.
Kamikawa Subprefecture
Kamikawa Subprefecture is an administrative division in central Hokkaido, Japan, known for its mountainous landscapes, national parks, and popular tourist destinations such as the Furano and Biei areas.
-
B.
Tokachi Subprefecture
Tokachi Subprefecture is an administrative region in eastern Hokkaido, Japan, known for its expansive agricultural lands, dairy farming, and natural hot springs.
-
C.
Sōya Subprefecture
Sōya Subprefecture is the northernmost subprefecture of Japan’s Hokkaido region, encompassing remote coastal areas and serving as an administrative center for cities such as Wakkanai.
-
D.
Ogasawara Subprefecture
Ogasawara Subprefecture is an administrative division of Tokyo Metropolis in Japan that governs the remote Ogasawara (Bonin) Islands, including Iwo Jima.
-
E.
Kushiro Subprefecture
Kushiro Subprefecture is an administrative region in eastern Hokkaido, Japan, known for its rich wetlands, wildlife, and protected natural areas.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
administrative region
ⓘ
subprefecture ⓘ |
| administrativeCenter | Hakodate NERFINISHED ⓘ |
| bordersBodyOfWater |
Pacific Ocean
ⓘ
Sea of Japan NERFINISHED ⓘ Tsugaru Strait NERFINISHED ⓘ |
| contains |
Fukushima, Hokkaido
NERFINISHED
ⓘ
Hakodate NERFINISHED ⓘ Hakodate City NERFINISHED ⓘ Hokuto NERFINISHED ⓘ Kameda District NERFINISHED ⓘ Kamiiso District NERFINISHED ⓘ Kayabe District NERFINISHED ⓘ Kikonai NERFINISHED ⓘ Matsumae NERFINISHED ⓘ Matsumae District NERFINISHED ⓘ Mori NERFINISHED ⓘ Nanae NERFINISHED ⓘ Oshamambe NERFINISHED ⓘ Oshima District NERFINISHED ⓘ Shikabe NERFINISHED ⓘ Shiriuchi NERFINISHED ⓘ Shiriuchi District NERFINISHED ⓘ Yakumo NERFINISHED ⓘ |
| country | Japan ⓘ |
| countrySubdivisionOf | Japan NERFINISHED ⓘ |
| governingBody | Hokkaido Prefectural Government Oshima General Subprefectural Bureau NERFINISHED ⓘ |
| hasAirport | Hakodate Airport NERFINISHED ⓘ |
| hasMajorCity | Hakodate NERFINISHED ⓘ |
| hasPeninsula | Oshima Peninsula NERFINISHED ⓘ |
| hasPort | Port of Hakodate NERFINISHED ⓘ |
| hasRailConnection | Hokkaido Shinkansen (via Hakodate area) NERFINISHED ⓘ |
| hasSettlementType | Subprefecture of Hokkaido NERFINISHED ⓘ |
| isCoastal | true ⓘ |
| knownFor |
Hakodate tourism
ⓘ
agriculture ⓘ fishing industry ⓘ |
| language | Japanese ⓘ |
| locatedIn |
Hokkaido
NERFINISHED
ⓘ
southern Hokkaido ⓘ |
| locatedInRegion | Oshima Peninsula NERFINISHED ⓘ |
| locatedOnIsland | Hokkaido NERFINISHED ⓘ |
| nativeNameLanguage | ja ⓘ |
| partOf | Hokkaido Prefecture NERFINISHED ⓘ |
| region | Hokkaido NERFINISHED ⓘ |
| timeZone | Japan Standard Time ⓘ |
| UTCOffset | +09:00 ⓘ |
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: Oshima Subprefecture Description of subject: Oshima Subprefecture is an administrative region in southern Hokkaido, Japan, that includes the city of Hakodate and surrounding areas.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.