Asai Nagamasa
E669371
Asai Nagamasa was a Sengoku-period Japanese daimyō of Ōmi Province, known for his alliance and later betrayal of his brother-in-law Oda Nobunaga, which led to his clan’s destruction.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Asai Nagamasa canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7057815 — 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: Asai Nagamasa Context triple: [Oda Nobunaga, opponent, Asai Nagamasa]
-
A.
Shigenobu
Shigenobu is a Japanese given name notably borne by Ōkuma Shigenobu, a prominent Meiji-era statesman and former Prime Minister of Japan.
-
B.
Hosokawa Tadaoki
Hosokawa Tadaoki was a Sengoku- and early Edo-period Japanese daimyō known for his military service under Oda Nobunaga and Toyotomi Hideyoshi and for his deep involvement in the tea ceremony culture.
-
C.
Ōshima Yoshimasa
Ōshima Yoshimasa was an Imperial Japanese Army general best known for his leadership during the First Sino-Japanese War, including commanding Japanese forces at the Battle of Seonghwan.
-
D.
Toyotomi Hidenaga
Toyotomi Hidenaga was a prominent samurai commander and half-brother of Toyotomi Hideyoshi who played a key role in Japan’s unification during the late Sengoku period.
-
E.
Oda Nobukatsu
Oda Nobukatsu was a samurai lord of Japan’s Sengoku period, best known as one of Oda Nobunaga’s sons who inherited and contested parts of his father’s domain after Nobunaga’s death.
- 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: Asai Nagamasa Target entity description: Asai Nagamasa was a Sengoku-period Japanese daimyō of Ōmi Province, known for his alliance and later betrayal of his brother-in-law Oda Nobunaga, which led to his clan’s destruction.
-
A.
Shigenobu
Shigenobu is a Japanese given name notably borne by Ōkuma Shigenobu, a prominent Meiji-era statesman and former Prime Minister of Japan.
-
B.
Hosokawa Tadaoki
Hosokawa Tadaoki was a Sengoku- and early Edo-period Japanese daimyō known for his military service under Oda Nobunaga and Toyotomi Hideyoshi and for his deep involvement in the tea ceremony culture.
-
C.
Ōshima Yoshimasa
Ōshima Yoshimasa was an Imperial Japanese Army general best known for his leadership during the First Sino-Japanese War, including commanding Japanese forces at the Battle of Seonghwan.
-
D.
Toyotomi Hidenaga
Toyotomi Hidenaga was a prominent samurai commander and half-brother of Toyotomi Hideyoshi who played a key role in Japan’s unification during the late Sengoku period.
-
E.
Oda Nobukatsu
Oda Nobukatsu was a samurai lord of Japan’s Sengoku period, best known as one of Oda Nobunaga’s sons who inherited and contested parts of his father’s domain after Nobunaga’s death.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese daimyō
ⓘ
Sengoku-period person ⓘ samurai ⓘ |
| alliedWith |
Asakura Yoshikage
NERFINISHED
ⓘ
Oda Nobunaga NERFINISHED ⓘ |
| baseOfOperations | Odani Castle NERFINISHED ⓘ |
| birthYear | 1545 ⓘ |
| brotherInLaw | Oda Nobunaga NERFINISHED ⓘ |
| castle | Odani Castle NERFINISHED ⓘ |
| child |
Oeyo
NERFINISHED
ⓘ
Ohatsu NERFINISHED ⓘ Yodo-dono NERFINISHED ⓘ |
| clan |
Asai clan
NERFINISHED
ⓘ
Azai clan NERFINISHED ⓘ |
| country | Japan ⓘ |
| deathCause | seppuku ⓘ |
| deathPlace | Odani Castle NERFINISHED ⓘ |
| deathYear | 1573 ⓘ |
| domain | Ōmi Province NERFINISHED ⓘ |
| enemy | Tokugawa Ieyasu NERFINISHED ⓘ |
| era | Sengoku period NERFINISHED ⓘ |
| father | Azai Hisamasa NERFINISHED ⓘ |
| gender | male ⓘ |
| historicalPeriod | 16th century ⓘ |
| historicalReputation | tragic Sengoku warlord who opposed Oda Nobunaga ⓘ |
| knownFor |
strategic marriage alliance with the Oda clan
ⓘ
turning against Oda Nobunaga in support of the Asakura clan ⓘ |
| loyaltyShiftedFrom | Oda clan NERFINISHED ⓘ |
| loyaltyShiftedTo | Asakura clan NERFINISHED ⓘ |
| motherInLaw | Oda Nobuhide’s wife ⓘ |
| notableFamilyMember |
Oeyo
NERFINISHED
ⓘ
Ohatsu NERFINISHED ⓘ Yodo-dono NERFINISHED ⓘ |
| notableFor |
alliance with Oda Nobunaga
ⓘ
betrayal of Oda Nobunaga ⓘ conflict with the Oda clan ⓘ destruction of the Azai clan ⓘ |
| opposedBy | Oda Nobunaga NERFINISHED ⓘ |
| participatedIn |
Battle of Anegawa
NERFINISHED
ⓘ
Battle of Kanegasaki NERFINISHED ⓘ |
| position | daimyō of northern Ōmi Province ⓘ |
| regionRuled | northern Ōmi ⓘ |
| relatedEvent | Siege of Odani Castle NERFINISHED ⓘ |
| relativeByMarriage |
Nobunaga’s family
ⓘ
Oda Nobunaga NERFINISHED ⓘ |
| sidedWith | Asakura clan at the Battle of Anegawa ⓘ |
| spouse | Oichi NERFINISHED ⓘ |
| successor | none (Azai clan destroyed) ⓘ |
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: Asai Nagamasa Description of subject: Asai Nagamasa was a Sengoku-period Japanese daimyō of Ōmi Province, known for his alliance and later betrayal of his brother-in-law Oda Nobunaga, which led to his clan’s destruction.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.