Koizumi
E86419
Koizumi is a Japanese surname most prominently associated with Junichiro Koizumi, a former Prime Minister of Japan known for his reformist policies.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Koizumi canonical | 8 |
| Koizumi Yakumo | 1 |
| コイズミ | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T541715 — 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: Koizumi Context triple: [Junichiro Koizumi, familyName, Koizumi]
-
A.
Yamamoto
Yamamoto is a Japanese surname most famously associated with Admiral Isoroku Yamamoto, the commander-in-chief of the Imperial Japanese Navy during World War II.
-
B.
Kintomo Mushakoji
Kintomo Mushakoji was a Japanese diplomat who served as a key representative of Japan’s government in the 1930s, notably involved in its alignment with Axis powers.
-
C.
Adachi
Adachi is a special ward in northern Tokyo, Japan, known as a primarily residential and industrial area along the Arakawa River.
-
D.
Shōhō
Shōhō was a Japanese light aircraft carrier of the Imperial Japanese Navy during World War II, notable for being the first Japanese carrier sunk in the war during the Battle of the Coral Sea.
-
E.
Hirakata
Hirakata is a city in Japan located between Osaka and Kyoto, known for its residential suburbs, historical sites, and the popular Hirakata Park amusement park.
- 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: Koizumi Target entity description: Koizumi is a Japanese surname most prominently associated with Junichiro Koizumi, a former Prime Minister of Japan known for his reformist policies.
-
A.
Yamamoto
Yamamoto is a Japanese surname most famously associated with Admiral Isoroku Yamamoto, the commander-in-chief of the Imperial Japanese Navy during World War II.
-
B.
Kintomo Mushakoji
Kintomo Mushakoji was a Japanese diplomat who served as a key representative of Japan’s government in the 1930s, notably involved in its alignment with Axis powers.
-
C.
Adachi
Adachi is a special ward in northern Tokyo, Japan, known as a primarily residential and industrial area along the Arakawa River.
-
D.
Shōhō
Shōhō was a Japanese light aircraft carrier of the Imperial Japanese Navy during World War II, notable for being the first Japanese carrier sunk in the war during the Battle of the Coral Sea.
-
E.
Hirakata
Hirakata is a city in Japan located between Osaka and Kyoto, known for its residential suburbs, historical sites, and the popular Hirakata Park amusement park.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese surname
ⓘ
fictional character ⓘ human ⓘ human ⓘ human ⓘ human ⓘ |
| alsoKnownAs | Lafcadio Hearn ⓘ |
| appearsInWork | Love Live! School Idol Project ⓘ |
| canBeWrittenAs |
古泉
ⓘ
小泉 ⓘ |
| countryOfCitizenship |
Japan
ⓘ
Japan ⓘ Japan ⓘ Japan ⓘ |
| countryOfOrigin | Japan ⓘ |
| familyName |
Koizumi
self-linksurface differs
ⓘ
Koizumi self-linksurface differs ⓘ Koizumi self-linksurface differs ⓘ Koizumi self-linksurface differs ⓘ |
| familyNameUsedIn | Japan ⓘ |
| father | Junichiro Koizumi ⓘ |
| givenName | Junichiro ⓘ |
| hasNotableBearer |
Koizumi Hanayo
ⓘ
Koizumi Kyoko ⓘ Koizumi self-linksurface differs ⓘ
surface form:
Koizumi Yakumo
|
| hasNotablePoliticalFamilyMember |
Junichiro Koizumi
ⓘ
Shinjiro Koizumi ⓘ |
| headOfGovernmentOf | Japan ⓘ |
| knownFor |
distinctive personal style and media-savvy politics
ⓘ
economic reforms in Japan ⓘ postal privatization initiative ⓘ reformist policies ⓘ writings on Japan and Japanese folklore ⓘ |
| languageOfOrigin |
Japanese
ⓘ
surface form:
Japanese language
|
| memberOfPoliticalParty |
Liberal Democratic Party
ⓘ
surface form:
Liberal Democratic Party (Japan)
Liberal Democratic Party ⓘ
surface form:
Liberal Democratic Party (Japan)
|
| notableBearer | Junichiro Koizumi ⓘ |
| occupation |
actress
ⓘ
journalist ⓘ politician ⓘ politician ⓘ singer ⓘ teacher ⓘ writer ⓘ |
| officeEndTime | 2006 ⓘ |
| officeStartTime | 2001 ⓘ |
| positionHeld |
Member of the House of Representatives of Japan
ⓘ
Member of the House of Representatives of Japan ⓘ Prime Minister of Japan ⓘ |
| writtenIn | Kanji ⓘ |
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: Koizumi Description of subject: Koizumi is a Japanese surname most prominently associated with Junichiro Koizumi, a former Prime Minister of Japan known for his reformist policies.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Junichiro Koizumi
subject surface form:
Shinjiro Koizumi
this entity surface form:
Koizumi Yakumo
subject surface form:
Koizumi Kyoko
subject surface form:
Koizumi Hanayo
this entity surface form:
コイズミ