Yasuko Hatoyama
E188665
Yasuko Hatoyama was a prominent Japanese heiress and political matriarch of the influential Hatoyama family, known for her substantial financial and behind-the-scenes support of her son Yukio Hatoyama’s political career.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Yasuko Hatoyama canonical | 2 |
| Hatoyama | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1593768 — 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: Yasuko Hatoyama Context triple: [Yukio Hatoyama, mother, Yasuko Hatoyama]
-
A.
Yukio Hatoyama
Yukio Hatoyama is a Japanese politician who served as Prime Minister of Japan from 2009 to 2010 and was a leading figure in the Democratic Party of Japan.
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B.
Yoshihide Suga
Yoshihide Suga is a Japanese politician who served as Prime Minister of Japan from 2020 to 2021, succeeding Shinzo Abe and leading the country through the early phase of the COVID-19 pandemic.
-
C.
Yoshiko Aso
Yoshiko Aso is a member of the prominent Aso political and business family in Japan, known for her familial connection to former Prime Minister Taro Aso.
-
D.
Chikako Aso
Chikako Aso is the wife of Japanese politician and former Prime Minister Taro Aso.
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E.
Jun’ya Koizumi
Jun’ya Koizumi is a Japanese politician and the son of former Prime Minister Junichiro Koizumi.
- 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: Yasuko Hatoyama Target entity description: Yasuko Hatoyama was a prominent Japanese heiress and political matriarch of the influential Hatoyama family, known for her substantial financial and behind-the-scenes support of her son Yukio Hatoyama’s political career.
-
A.
Yukio Hatoyama
Yukio Hatoyama is a Japanese politician who served as Prime Minister of Japan from 2009 to 2010 and was a leading figure in the Democratic Party of Japan.
-
B.
Yoshihide Suga
Yoshihide Suga is a Japanese politician who served as Prime Minister of Japan from 2020 to 2021, succeeding Shinzo Abe and leading the country through the early phase of the COVID-19 pandemic.
-
C.
Yoshiko Aso
Yoshiko Aso is a member of the prominent Aso political and business family in Japan, known for her familial connection to former Prime Minister Taro Aso.
-
D.
Chikako Aso
Chikako Aso is the wife of Japanese politician and former Prime Minister Taro Aso.
-
E.
Jun’ya Koizumi
Jun’ya Koizumi is a Japanese politician and the son of former Prime Minister Junichiro Koizumi.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese person
ⓘ
heiress ⓘ human ⓘ political matriarch ⓘ |
| associatedWith |
Democratic Party (Japan)
ⓘ
surface form:
Democratic Party of Japan
|
| child |
Kunio Hatoyama
ⓘ
Yukio Hatoyama ⓘ |
| countryOfCitizenship | Japan ⓘ |
| familyName |
Yasuko Hatoyama
self-linksurface differs
ⓘ
surface form:
Hatoyama
|
| father | Shojiro Ishibashi NERFINISHED ⓘ |
| gender | female ⓘ |
| givenName | Yasuko ⓘ |
| languageSpoken | Japanese ⓘ |
| maidenFamilyName | Ishibashi ⓘ |
| memberOfFamily | Hatoyama family ⓘ |
| name | Yasuko Hatoyama self-link ⓘ |
| notableDescendant |
Kunio Hatoyama
ⓘ
Yukio Hatoyama ⓘ |
| notableFamilyRole | matriarch of the Hatoyama family ⓘ |
| notableFor |
behind-the-scenes support of the Democratic Party of Japan
ⓘ
role as political matriarch of the Hatoyama family ⓘ substantial financial support of Yukio Hatoyama’s political career ⓘ |
| placeOfBirth | Japan ⓘ |
| politicalInfluence | behind-the-scenes influence in Japanese politics ⓘ |
| relativeByBirth | Ishibashi family ⓘ |
| spouse | Iichirō Hatoyama ⓘ |
| usedWealthFor |
funding Yukio Hatoyama’s political activities
ⓘ
supporting Hatoyama family political influence ⓘ |
| wealthSource |
Bridgestone fortune
ⓘ
inheritance from Ishibashi family ⓘ |
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: Yasuko Hatoyama Description of subject: Yasuko Hatoyama was a prominent Japanese heiress and political matriarch of the influential Hatoyama family, known for her substantial financial and behind-the-scenes support of her son Yukio Hatoyama’s political career.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Hatoyama