Iō-tō
E601012
Iō-tō is a volcanic island in Japan’s Ogasawara archipelago, historically known as Iwo Jima and famous as the site of a major World War II battle.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Iō-tō canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6612582 — 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: Iō-tō Context triple: [Iōjima, alsoKnownAs, Iō-tō]
-
A.
Ōtoku
Ōtoku was a Japanese era name (nengō) of the late 11th century, used during the reign of Emperor Shirakawa.
-
B.
Takamikura
Takamikura is the ornate imperial throne used in Kyoto for the enthronement ceremonies of Japanese emperors.
-
C.
Gotō
Gotō is a Japanese surname borne by various notable figures in politics, business, and the arts.
-
D.
Eiao
Eiao is a remote, uninhabited volcanic island in the northern Marquesas Islands of French Polynesia, known for its rugged terrain and important seabird habitats.
-
E.
Takaro
Takaro is a residential suburb located within the city of Palmerston North in New Zealand.
- 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: Iō-tō Target entity description: Iō-tō is a volcanic island in Japan’s Ogasawara archipelago, historically known as Iwo Jima and famous as the site of a major World War II battle.
-
A.
Ōtoku
Ōtoku was a Japanese era name (nengō) of the late 11th century, used during the reign of Emperor Shirakawa.
-
B.
Takamikura
Takamikura is the ornate imperial throne used in Kyoto for the enthronement ceremonies of Japanese emperors.
-
C.
Gotō
Gotō is a Japanese surname borne by various notable figures in politics, business, and the arts.
-
D.
Eiao
Eiao is a remote, uninhabited volcanic island in the northern Marquesas Islands of French Polynesia, known for its rugged terrain and important seabird habitats.
-
E.
Takaro
Takaro is a residential suburb located within the city of Palmerston North in New Zealand.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | volcanic island ⓘ |
| administeredBy | Tokyo Metropolitan Government NERFINISHED ⓘ |
| area | about 21 km² ⓘ |
| battleEndDate | 1945-03-26 ⓘ |
| battleOccurredOn | Battle of Iwo Jima NERFINISHED ⓘ |
| battleStartDate | 1945-02-19 ⓘ |
| capturedBy | United States forces in 1945 ⓘ |
| climate | humid subtropical climate ⓘ |
| country | Japan ⓘ |
| elevation | 169 m ⓘ |
| formerName |
Iwo Jima
NERFINISHED
ⓘ
Iōjima NERFINISHED ⓘ |
| geologicalType |
active volcano
ⓘ
stratovolcano ⓘ |
| hasCoordinateLatitude | 24.79 N ⓘ |
| hasCoordinateLongitude | 141.32 E ⓘ |
| hasFeature |
Mount Suribachi
NERFINISHED
ⓘ
airfield ⓘ black sand beaches ⓘ sulfur deposits ⓘ |
| hasMemorial | Iwo Jima Memorials and cemeteries NERFINISHED ⓘ |
| hasNearbyIsland |
Kita Iō-tō
NERFINISHED
ⓘ
Minami Iō-tō NERFINISHED ⓘ |
| hasRunway | about 2,650 m ⓘ |
| highestPoint | Mount Suribachi NERFINISHED ⓘ |
| highestPointElevation | 169 m ⓘ |
| knownFor |
Battle of Iwo Jima
NERFINISHED
ⓘ
World War II Pacific campaign NERFINISHED ⓘ |
| length | about 8 km ⓘ |
| locatedIn |
Ogasawara Subprefecture
NERFINISHED
ⓘ
Ogasawara archipelago NERFINISHED ⓘ Philippine Sea NERFINISHED ⓘ Tokyo Metropolis NERFINISHED ⓘ |
| nameChangeFrom | Iwo Jima NERFINISHED ⓘ |
| nameChangeReason | restoration of traditional Japanese reading ⓘ |
| nameOfficiallyChanged | 2007 ⓘ |
| nativeName | 硫黄島 NERFINISHED ⓘ |
| nativeNameLanguage | ja ⓘ |
| partOf | Volcano Islands NERFINISHED ⓘ |
| population | no permanent civilian population ⓘ |
| returnedTo | Japanese sovereignty in 1968 ⓘ |
| strategicImportance | airbase between Mariana Islands and Japan ⓘ |
| timeZone | Japan Standard Time ⓘ |
| usedBy |
Japan Self-Defense Forces
NERFINISHED
ⓘ
United States military NERFINISHED ⓘ |
| utcOffset | +9 ⓘ |
| volcanicArcOrBelt | Izu–Bonin–Mariana Arc NERFINISHED ⓘ |
| width | about 4 km ⓘ |
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: Iō-tō Description of subject: Iō-tō is a volcanic island in Japan’s Ogasawara archipelago, historically known as Iwo Jima and famous as the site of a major World War II battle.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.