Tetsu Katayama
E90776
Tetsu Katayama was a Japanese socialist politician who served as Japan’s first postwar prime minister and the first from a socialist party.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tetsu Katayama canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T515673 — 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: Tetsu Katayama Context triple: [Japan Socialist Party, notableLeader, Tetsu Katayama]
-
A.
Daisuke Kato
Daisuke Kato is a former Japanese professional baseball player best known for his time with the Orix Buffaloes in Nippon Professional Baseball.
-
B.
Eishiro Saito
Eishiro Saito was a prominent Japanese businessman and sports administrator who notably led the organizing committee for the 1998 Winter Olympics in Nagano.
-
C.
Jirō Minami
Jirō Minami was a Japanese general and colonial administrator who served as Governor-General of Korea during the later period of Japanese rule.
-
D.
Yoshitsugu Saito
Yoshitsugu Saitō was an Imperial Japanese Army lieutenant general best known for leading Japan’s doomed defense of Saipan during World War II and dying in the battle.
-
E.
Koichi Tanaka
Koichi Tanaka is a Japanese engineer and Nobel Prize–winning chemist renowned for his pioneering work in mass spectrometry, particularly soft laser desorption ionization.
- 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: Tetsu Katayama Target entity description: Tetsu Katayama was a Japanese socialist politician who served as Japan’s first postwar prime minister and the first from a socialist party.
-
A.
Daisuke Kato
Daisuke Kato is a former Japanese professional baseball player best known for his time with the Orix Buffaloes in Nippon Professional Baseball.
-
B.
Eishiro Saito
Eishiro Saito was a prominent Japanese businessman and sports administrator who notably led the organizing committee for the 1998 Winter Olympics in Nagano.
-
C.
Jirō Minami
Jirō Minami was a Japanese general and colonial administrator who served as Governor-General of Korea during the later period of Japanese rule.
-
D.
Yoshitsugu Saito
Yoshitsugu Saitō was an Imperial Japanese Army lieutenant general best known for leading Japan’s doomed defense of Saipan during World War II and dying in the battle.
-
E.
Koichi Tanaka
Koichi Tanaka is a Japanese engineer and Nobel Prize–winning chemist renowned for his pioneering work in mass spectrometry, particularly soft laser desorption ionization.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese socialist politician
ⓘ
human ⓘ politician ⓘ prime minister ⓘ socialist ⓘ |
| activeIn | 20th-century Japanese politics ⓘ |
| advocatedFor |
democratic socialism
ⓘ
labor rights ⓘ social welfare policies ⓘ |
| birthDate | 1887-07-28 ⓘ |
| birthPlace | Tanabe, Wakayama, Japan ⓘ |
| coalitionGovernmentWith |
Democratic Party (Japan, pre-1950)
ⓘ
linked to:
Japan Democratic Party
Japan Socialist Party ⓘ National Cooperative Party ⓘ |
| countryOfCitizenship | Japan ⓘ |
| deathDate | 1978-05-30 ⓘ |
| deathPlace |
Tokyo, Japan
ⓘ
linked to:
Tokyo
|
| educatedAt |
Tokyo Imperial University
ⓘ
linked to:
University of Tokyo
|
| era | postwar Japan ⓘ |
| fieldOfWork |
law
ⓘ
politics ⓘ |
| governmentHeadOf | Government of Japan ⓘ |
| headOfGovernmentFor | Japan ⓘ |
| honorificPrefix | Prime Minister ⓘ |
| languageOfWorkOrName | Japanese ⓘ |
| memberOf | House of Representatives of Japan ⓘ |
| name | Tetsu Katayama ⓘ |
| nativeName | 片山 哲 ⓘ |
| notableFor |
being Japan’s first postwar prime minister
ⓘ
being the first Japanese prime minister from a socialist party ⓘ |
| occupation | lawyer ⓘ |
| officeEnd | 1948-03-10 ⓘ |
| officeStart | 1947-05-24 ⓘ |
| participatedIn | formation of the 1947 Japanese Constitution’s postwar political order ⓘ |
| politicalIdeology | socialism ⓘ |
| politicalParty | Japan Socialist Party ⓘ |
| positionHeld |
Chairman of the Japan Socialist Party
ⓘ
Member of the House of Representatives of Japan ⓘ Prime Minister of Japan ⓘ |
| precededBy | Shigeru Yoshida ⓘ |
| primeMinisterOrder | 46th Prime Minister of Japan ⓘ |
| religion |
Christianity
ⓘ
Protestantism ⓘ |
| spouse | Katayama Haru ⓘ |
| succeededBy | Hitoshi Ashida ⓘ |
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: Tetsu Katayama Description of subject: Tetsu Katayama was a Japanese socialist politician who served as Japan’s first postwar prime minister and the first from a socialist party.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.