Iōtō
E214429
Iōtō, historically known as Iwo Jima, is a small Japanese volcanic island in the Pacific Ocean famous as a major World War II battlefield and the site of the iconic U.S. flag-raising photograph.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Iōtō canonical | 8 |
| Minami Iōtō | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1259544 — 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: Iōtō Context triple: [Volcano Islands, contains, Iōtō]
-
A.
Onekotan
Onekotan is a remote volcanic island in Russia's Kuril Islands chain, known for its dramatic caldera lakes and rugged, uninhabited landscape.
-
B.
Minamiawaji
Minamiawaji is a coastal city located on the southern part of Awaji Island in Japan, known for its scenic landscapes, agriculture, and role as a gateway between Honshu and Shikoku.
-
C.
Awaji
Awaji is a city located on Awaji Island in Japan, known for its scenic coastal landscapes, agriculture, and role as a gateway between Honshu and Shikoku.
-
D.
Ota, Japan
Ōta is a special ward in Tokyo, Japan, known for Haneda Airport, its coastal location on Tokyo Bay, and a mix of residential, industrial, and commercial districts.
-
E.
Gifu
Gifu is a city in central Japan that serves as the capital of Gifu Prefecture, known for its historic cormorant fishing on the Nagara River and its strategic location in the Chūbu 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: Iōtō Target entity description: Iōtō, historically known as Iwo Jima, is a small Japanese volcanic island in the Pacific Ocean famous as a major World War II battlefield and the site of the iconic U.S. flag-raising photograph.
-
A.
Onekotan
Onekotan is a remote volcanic island in Russia's Kuril Islands chain, known for its dramatic caldera lakes and rugged, uninhabited landscape.
-
B.
Minamiawaji
Minamiawaji is a coastal city located on the southern part of Awaji Island in Japan, known for its scenic landscapes, agriculture, and role as a gateway between Honshu and Shikoku.
-
C.
Awaji
Awaji is a city located on Awaji Island in Japan, known for its scenic coastal landscapes, agriculture, and role as a gateway between Honshu and Shikoku.
-
D.
Ota, Japan
Ōta is a special ward in Tokyo, Japan, known for Haneda Airport, its coastal location on Tokyo Bay, and a mix of residential, industrial, and commercial districts.
-
E.
Gifu
Gifu is a city in central Japan that serves as the capital of Gifu Prefecture, known for its historic cormorant fishing on the Nagara River and its strategic location in the Chūbu region.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese island
ⓘ
World War II battle ⓘ stratovolcano ⓘ volcanic island ⓘ war photograph ⓘ |
| access | restricted military access ⓘ |
| adminDistrict |
Ogasawara Subprefecture
ⓘ
Ogasawara Village ⓘ |
| administeredBy |
Tokyo Prefecture
ⓘ
surface form:
Tokyo Metropolis
|
| area | about 21 square kilometres ⓘ |
| belligerent |
Japan
ⓘ
surface form:
Empire of Japan
United States of America ⓘ
surface form:
United States
|
| climate | humid subtropical climate ⓘ |
| country | Japan ⓘ |
| depicts |
flag raising on Iōtō
ⓘ
raising of the U.S. flag on Mount Suribachi ⓘ |
| elevation | 169 metres ⓘ |
| endDate | 1945-03-26 ⓘ |
| famousFor |
U.S. flag-raising photograph
ⓘ
World War II battle ⓘ |
| geologicalType | volcanic caldera island ⓘ |
| hasAirport | Iwo Jima Air Base ⓘ |
| hasEvent | Battle of Iwo Jima ⓘ |
| hasFeature |
active volcano
ⓘ
black sand beaches ⓘ sulfur deposits ⓘ |
| hasHighestPoint | Mount Suribachi ⓘ |
| historicalName |
Iwo Jima
ⓘ
Iōjima ⓘ |
| locatedIn |
Pacific Ocean
ⓘ
Philippine Sea ⓘ |
| locatedOn |
Iōtō
self-linksurface differs
ⓘ
Iōtō self-linksurface differs ⓘ |
| location |
Iōtō
self-linksurface differs
ⓘ
Iōtō self-linksurface differs ⓘ |
| memorializedBy | Marine Corps War Memorial ⓘ |
| nameMeaning | Sulfur Island NERFINISHED ⓘ |
| nativeName |
Sulfur Island
ⓘ
surface form:
硫黄島
|
| partOf |
Ogasawara Islands
ⓘ
Volcano Islands ⓘ |
| photographer | Joe Rosenthal ⓘ |
| population | no permanent civilian population ⓘ |
| result | U.S. victory ⓘ |
| startDate | 1945-02-19 ⓘ |
| strategicImportance |
airfields for bombing raids on Japan
ⓘ
emergency landing site for B-29 bombers ⓘ |
| timeZone | Japan Standard Time ⓘ |
| usedFor |
Japan Self-Defense Forces base
ⓘ
military airfield ⓘ |
| volcanicActivity | frequent minor eruptions and uplift ⓘ |
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: Iōtō Description of subject: Iōtō, historically known as Iwo Jima, is a small Japanese volcanic island in the Pacific Ocean famous as a major World War II battlefield and the site of the iconic U.S. flag-raising photograph.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Minami Iōtō