Yamana Sōzen
E944836
Yamana Sōzen was a powerful 15th-century Japanese daimyō whose rivalry with Hosokawa Katsumoto helped trigger and define the Ōnin War, marking the beginning of the Sengoku period.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Yamana Sōzen canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11749573 — 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: Yamana Sōzen Context triple: [Ōnin War, commander, Yamana Sōzen]
-
A.
Hara Sankei
Hara Sankei was a Japanese businessman and art patron best known for creating and developing the historic Sankeien Garden in Yokohama.
-
B.
Sesshū Tōyō
Sesshū Tōyō was a preeminent Japanese Zen Buddhist monk and ink painter renowned for his powerful monochrome landscapes and profound influence on the development of Japanese ink painting.
-
C.
Tatsuno Kingo
Tatsuno Kingo was a prominent Japanese architect of the Meiji era, best known for pioneering Western-style brick architecture in Japan and designing landmark buildings such as Tokyo Station.
-
D.
Wakamiya Ōji
Wakamiya Ōji is the main ceremonial avenue of Kamakura, Japan, leading from the waterfront through the city to Tsurugaoka Hachimangū Shrine.
-
E.
Kenji Sōchō
Kenji Sōchō is the formal Japanese title used to refer to the Prosecutor-General, the highest-ranking official in Japan’s public prosecution system.
- 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: Yamana Sōzen Target entity description: Yamana Sōzen was a powerful 15th-century Japanese daimyō whose rivalry with Hosokawa Katsumoto helped trigger and define the Ōnin War, marking the beginning of the Sengoku period.
-
A.
Hara Sankei
Hara Sankei was a Japanese businessman and art patron best known for creating and developing the historic Sankeien Garden in Yokohama.
-
B.
Sesshū Tōyō
Sesshū Tōyō was a preeminent Japanese Zen Buddhist monk and ink painter renowned for his powerful monochrome landscapes and profound influence on the development of Japanese ink painting.
-
C.
Tatsuno Kingo
Tatsuno Kingo was a prominent Japanese architect of the Meiji era, best known for pioneering Western-style brick architecture in Japan and designing landmark buildings such as Tokyo Station.
-
D.
Wakamiya Ōji
Wakamiya Ōji is the main ceremonial avenue of Kamakura, Japan, leading from the waterfront through the city to Tsurugaoka Hachimangū Shrine.
-
E.
Kenji Sōchō
Kenji Sōchō is the formal Japanese title used to refer to the Prosecutor-General, the highest-ranking official in Japan’s public prosecution system.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese daimyō
ⓘ
samurai ⓘ warlord ⓘ |
| activePeriod | 15th century ⓘ |
| alias |
Yamana Mochitoyo
NERFINISHED
ⓘ
Yamana Sōzen Mochitoyo NERFINISHED ⓘ |
| associatedWithPeriod |
Muromachi period
NERFINISHED
ⓘ
Sengoku period NERFINISHED ⓘ |
| basedIn | Kyoto NERFINISHED ⓘ |
| birthName | Mochitoyo NERFINISHED ⓘ |
| category |
15th-century Japanese people
ⓘ
Feudal Japan daimyō ⓘ Japanese military leaders ⓘ |
| clan | Yamana clan NERFINISHED ⓘ |
| conflict | Ōnin War NERFINISHED ⓘ |
| contributedTo | weakening of central shogunal authority ⓘ |
| country | Japan ⓘ |
| era | Ashikaga shogunate NERFINISHED ⓘ |
| familyName | Yamana NERFINISHED ⓘ |
| gender | male ⓘ |
| givenName | Mochitoyo NERFINISHED ⓘ |
| helpedInitiate | Sengoku period NERFINISHED ⓘ |
| helpedTrigger | Ōnin War NERFINISHED ⓘ |
| historicalContext | succession disputes within the Ashikaga shogunate ⓘ |
| historicalReputation | one of the main instigators of the Ōnin War ⓘ |
| influenced | political fragmentation of Japan ⓘ |
| knownFor | factional struggle within the Ashikaga shogunate ⓘ |
| language | Japanese ⓘ |
| legacy | key figure in the transition from Muromachi to Sengoku Japan ⓘ |
| militaryAllegiance | Yamana clan forces NERFINISHED ⓘ |
| militaryRole | faction leader in Kyoto urban warfare ⓘ |
| notableFor |
leadership in the Ōnin War
ⓘ
rivalry with Hosokawa Katsumoto ⓘ role in the decline of Ashikaga shogunate authority ⓘ |
| occupation |
daimyō
ⓘ
military commander ⓘ |
| opponentInWar | Hosokawa Katsumoto NERFINISHED ⓘ |
| politicalStatus | shugo (military governor) ⓘ |
| rival | Hosokawa Katsumoto NERFINISHED ⓘ |
| roleInEvent | leader of the western army in the Ōnin War ⓘ |
| sphereOfInfluence |
Kyoto politics
ⓘ
western Japan ⓘ |
| strategicGoal | increase Yamana clan power at court ⓘ |
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: Yamana Sōzen Description of subject: Yamana Sōzen was a powerful 15th-century Japanese daimyō whose rivalry with Hosokawa Katsumoto helped trigger and define the Ōnin War, marking the beginning of the Sengoku period.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.