Hōjō Ujimasa
E636933
Hōjō Ujimasa was a late Sengoku-period Japanese daimyō and fourth head of the Later Hōjō clan, known for ruling from Odawara and resisting Toyotomi Hideyoshi’s unification campaigns.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hōjō Ujimasa canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6864397 — 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: Hōjō Ujimasa Context triple: [Odawara campaign, commander, Hōjō Ujimasa]
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A.
Hōjō Tokimasa
Hōjō Tokimasa was the first shikken (regent) of the Kamakura shogunate and the founding leader of the Hōjō clan’s political dominance in medieval Japan.
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B.
Hōjō Yoshitoki
Hōjō Yoshitoki was a powerful Japanese shogunal regent and de facto ruler who consolidated the Hōjō clan’s control over the Kamakura shogunate in the early 13th century.
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C.
Hōjō Sōun
Hōjō Sōun was a prominent early Sengoku-period daimyō who founded the Later Hōjō clan and established its power base in the Kantō region of Japan.
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D.
Ugaki Kazushige
Ugaki Kazushige was a Japanese military officer and politician who served as a prominent imperial administrator during Japan’s pre-World War II expansion.
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E.
Ōtani Yoshitsugu
Ōtani Yoshitsugu was a Sengoku-period Japanese daimyō and tactician renowned for his loyalty to Ishida Mitsunari and his role in opposing Tokugawa Ieyasu during Japan’s unification conflicts.
- 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: Hōjō Ujimasa Target entity description: Hōjō Ujimasa was a late Sengoku-period Japanese daimyō and fourth head of the Later Hōjō clan, known for ruling from Odawara and resisting Toyotomi Hideyoshi’s unification campaigns.
-
A.
Hōjō Tokimasa
Hōjō Tokimasa was the first shikken (regent) of the Kamakura shogunate and the founding leader of the Hōjō clan’s political dominance in medieval Japan.
-
B.
Hōjō Yoshitoki
Hōjō Yoshitoki was a powerful Japanese shogunal regent and de facto ruler who consolidated the Hōjō clan’s control over the Kamakura shogunate in the early 13th century.
-
C.
Hōjō Sōun
Hōjō Sōun was a prominent early Sengoku-period daimyō who founded the Later Hōjō clan and established its power base in the Kantō region of Japan.
-
D.
Ugaki Kazushige
Ugaki Kazushige was a Japanese military officer and politician who served as a prominent imperial administrator during Japan’s pre-World War II expansion.
-
E.
Ōtani Yoshitsugu
Ōtani Yoshitsugu was a Sengoku-period Japanese daimyō and tactician renowned for his loyalty to Ishida Mitsunari and his role in opposing Tokugawa Ieyasu during Japan’s unification conflicts.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese daimyō
ⓘ
Sengoku-period person ⓘ samurai ⓘ |
| activity | regional governance from Odawara ⓘ |
| basedIn | Odawara NERFINISHED ⓘ |
| causeOfDeath | seppuku ⓘ |
| clan |
Hōjō clan
NERFINISHED
ⓘ
Later Hōjō clan NERFINISHED ⓘ |
| country | Japan ⓘ |
| deathPlace | Odawara NERFINISHED ⓘ |
| era | Sengoku period NERFINISHED ⓘ |
| familyName | Hōjō NERFINISHED ⓘ |
| father | Hōjō Ujiyasu NERFINISHED ⓘ |
| givenName | Ujimasa NERFINISHED ⓘ |
| historicalPeriod | late 16th century Japan ⓘ |
| memberOf | Later Hōjō clan NERFINISHED ⓘ |
| militaryRole | warlord ⓘ |
| notableEvent | Siege of Odawara (1590) NERFINISHED ⓘ |
| notableFor | resisting Toyotomi Hideyoshi’s unification campaigns ⓘ |
| opponent | Toyotomi Hideyoshi NERFINISHED ⓘ |
| politicalStatus | independent daimyō prior to Toyotomi unification ⓘ |
| positionHeld | fourth head of the Later Hōjō clan ⓘ |
| relative |
Hōjō Ujinao
NERFINISHED
ⓘ
Hōjō Ujiyasu NERFINISHED ⓘ |
| ruledFrom | Odawara Castle NERFINISHED ⓘ |
| successor | Hōjō Ujinao NERFINISHED ⓘ |
| surrenderedTo | Toyotomi Hideyoshi NERFINISHED ⓘ |
| territoryRuled |
Sagami Province
NERFINISHED
ⓘ
parts of the Kantō region ⓘ |
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: Hōjō Ujimasa Description of subject: Hōjō Ujimasa was a late Sengoku-period Japanese daimyō and fourth head of the Later Hōjō clan, known for ruling from Odawara and resisting Toyotomi Hideyoshi’s unification campaigns.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.