Otoya Yamaguchi
E527669
Otoya Yamaguchi was a 17-year-old Japanese ultranationalist who assassinated socialist politician Inejiro Asanuma during a televised political debate in 1960.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Otoya Yamaguchi canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3510019 — 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: Otoya Yamaguchi Context triple: [Inejiro Asanuma, killedBy, Otoya Yamaguchi]
-
A.
Yūsaku Kamekura
Yūsaku Kamekura was a pioneering Japanese graphic designer renowned for his modernist posters and visual identities, including iconic work for the 1964 Tokyo Olympics.
-
B.
Yoshisuke Aikawa
Yoshisuke Aikawa was a prominent Japanese industrialist and entrepreneur best known as the founding leader who built Nissan into a major automotive and industrial conglomerate.
-
C.
Makino Nobuaki
Makino Nobuaki was a Japanese diplomat and statesman who played a key role in Japan’s foreign policy during the late Meiji and Taishō periods, including its participation in the Paris Peace Conference and the early League of Nations era.
-
D.
Sanjo Ohashi
Sanjo Ohashi is a historic bridge in Kyoto, Japan, long regarded as a key terminus of the Tōkaidō road and an important crossing point in the city.
-
E.
Ozaki Yukio
Ozaki Yukio was a prominent Japanese liberal politician and statesman, often called the "father of the Japanese Constitution," known for championing democracy and civil rights in the Meiji and Taishō eras.
- 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: Otoya Yamaguchi Target entity description: Otoya Yamaguchi was a 17-year-old Japanese ultranationalist who assassinated socialist politician Inejiro Asanuma during a televised political debate in 1960.
-
A.
Yūsaku Kamekura
Yūsaku Kamekura was a pioneering Japanese graphic designer renowned for his modernist posters and visual identities, including iconic work for the 1964 Tokyo Olympics.
-
B.
Yoshisuke Aikawa
Yoshisuke Aikawa was a prominent Japanese industrialist and entrepreneur best known as the founding leader who built Nissan into a major automotive and industrial conglomerate.
-
C.
Makino Nobuaki
Makino Nobuaki was a Japanese diplomat and statesman who played a key role in Japan’s foreign policy during the late Meiji and Taishō periods, including its participation in the Paris Peace Conference and the early League of Nations era.
-
D.
Sanjo Ohashi
Sanjo Ohashi is a historic bridge in Kyoto, Japan, long regarded as a key terminus of the Tōkaidō road and an important crossing point in the city.
-
E.
Ozaki Yukio
Ozaki Yukio was a prominent Japanese liberal politician and statesman, often called the "father of the Japanese Constitution," known for championing democracy and civil rights in the Meiji and Taishō eras.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese ultranationalist
ⓘ
assassin ⓘ human ⓘ |
| ageAtDeath | 17 ⓘ |
| arrestedOn | 1960-10-12 ⓘ |
| associatedWithEvent | 1960 Anpo protests ⓘ |
| causeOfDeath | hanging ⓘ |
| countryOfCitizenship | Japan ⓘ |
| dateOfBirth | 1943-02-22 ⓘ |
| dateOfDeath | 1960-11-02 ⓘ |
| dateOfEvent | 1960-10-12 ⓘ |
| detainedAt | Tokyo Detention House ⓘ |
| educationLevel | high school dropout ⓘ |
| ethnicity | Japanese ⓘ |
| eventContext | televised political debate ⓘ |
| familyBackground | son of a Japanese Self-Defense Forces officer ⓘ |
| hasInfluenceOn | Japanese right-wing extremism ⓘ |
| historicalPeriod | postwar Japan ⓘ |
| ideologicalTarget | Japan Socialist Party ⓘ |
| imageDepictedIn | Pulitzer Prize-winning photograph of Asanuma assassination ⓘ |
| inspiredBy | Japanese militarist tradition ⓘ |
| languageSpoken | Japanese ⓘ |
| legalOutcome | died before trial ⓘ |
| mannerOfDeath | suicide ⓘ |
| mediaCoverage | assassination broadcast on live television ⓘ |
| memberOf | Greater Japan Patriotic Party ⓘ |
| name | Otoya Yamaguchi ⓘ |
| nativeName | 山口 二矢 ⓘ |
| notableFor | assassination of Inejiro Asanuma ⓘ |
| notableWork | assassination of Inejiro Asanuma ⓘ |
| occupation | political activist ⓘ |
| perpetrated | assassination of Inejiro Asanuma ⓘ |
| placeOfBirth |
Tokyo, Japan
ⓘ
linked to:
Tokyo
|
| placeOfDeath | Tokyo Detention House ⓘ |
| placeOfEvent | Hibiya Public Hall, Tokyo ⓘ |
| politicalIdeology |
far-right politics
ⓘ
ultranationalism ⓘ |
| portrayedIn |
documentaries about political violence in Japan
ⓘ
photograph by Yasushi Nagao ⓘ |
| religion | Shinto ⓘ |
| sexOrGender | male ⓘ |
| targetedPolitician | Inejiro Asanuma ⓘ |
| usedWeapon | yoroidoshi (short sword) ⓘ |
| victimOfAssassination | Inejiro Asanuma ⓘ |
| wroteMessageWith | toothbrush and toothpaste ⓘ |
| wroteSlogan |
Long live the Emperor
ⓘ
Would that I had seven lives to give for my country ⓘ |
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: Otoya Yamaguchi Description of subject: Otoya Yamaguchi was a 17-year-old Japanese ultranationalist who assassinated socialist politician Inejiro Asanuma during a televised political debate in 1960.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.