Emperor Seiwa
E714922
Emperor Seiwa was a 9th-century Japanese emperor whose descendants founded the influential Seiwa Genji branch of the Minamoto clan, from which many prominent samurai, including the first shoguns, claimed lineage.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Emperor Seiwa canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7996804 — 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: Emperor Seiwa Context triple: [Minamoto clan, foundingEmperorLine, Emperor Seiwa]
-
A.
Emperor Kōnin
Emperor Kōnin was the 49th emperor of Japan, known for restoring imperial authority after a period of political turmoil and for being the father of Emperor Kanmu, under whom the capital moved to Heian-kyō.
-
B.
Emperor Heizei
Emperor Heizei was the 51st emperor of Japan, known for his brief early 9th-century reign marked by political instability and his abdication in favor of his brother Emperor Saga.
-
C.
Emperor Go-Sanjō
Emperor Go-Sanjō was the 71st emperor of Japan, known for his efforts to strengthen imperial authority and reform the administration during the late Heian period.
-
D.
Emperor Shirakawa
Emperor Shirakawa was a Japanese sovereign of the late 11th and early 12th centuries who is renowned for pioneering the system of cloistered rule that shaped Heian-period politics.
-
E.
Emperor Kinmei
Emperor Kinmei was a 6th-century Japanese monarch traditionally regarded as one of the earliest reliably documented emperors of Japan, marking the beginning of historically attested imperial rule.
- 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: Emperor Seiwa Target entity description: Emperor Seiwa was a 9th-century Japanese emperor whose descendants founded the influential Seiwa Genji branch of the Minamoto clan, from which many prominent samurai, including the first shoguns, claimed lineage.
-
A.
Emperor Kōnin
Emperor Kōnin was the 49th emperor of Japan, known for restoring imperial authority after a period of political turmoil and for being the father of Emperor Kanmu, under whom the capital moved to Heian-kyō.
-
B.
Emperor Heizei
Emperor Heizei was the 51st emperor of Japan, known for his brief early 9th-century reign marked by political instability and his abdication in favor of his brother Emperor Saga.
-
C.
Emperor Go-Sanjō
Emperor Go-Sanjō was the 71st emperor of Japan, known for his efforts to strengthen imperial authority and reform the administration during the late Heian period.
-
D.
Emperor Shirakawa
Emperor Shirakawa was a Japanese sovereign of the late 11th and early 12th centuries who is renowned for pioneering the system of cloistered rule that shaped Heian-period politics.
-
E.
Emperor Kinmei
Emperor Kinmei was a 6th-century Japanese monarch traditionally regarded as one of the earliest reliably documented emperors of Japan, marking the beginning of historically attested imperial rule.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Emperor of Japan
ⓘ
human ⓘ |
| abdicated | 876 ⓘ |
| ascendedToThroneAtAge | 8 ⓘ |
| associatedClan | Minamoto clan NERFINISHED ⓘ |
| associatedLineage | Seiwa Genji NERFINISHED ⓘ |
| birthDate | 850 ⓘ |
| birthPlace | Heian-kyō NERFINISHED ⓘ |
| burialPlace | Kawachi no Misasagi NERFINISHED ⓘ |
| capitalDuringReign | Heian-kyō NERFINISHED ⓘ |
| child | Emperor Yōzei NERFINISHED ⓘ |
| country | Japan ⓘ |
| deathDate | 880 ⓘ |
| deathPlace | Japan NERFINISHED ⓘ |
| dynasty | Yamato dynasty NERFINISHED ⓘ |
| era | classical Japan ⓘ |
| eraName |
Jōgan
NERFINISHED
ⓘ
Ten'an NERFINISHED ⓘ |
| father | Emperor Montoku NERFINISHED ⓘ |
| givenName | Korehito NERFINISHED ⓘ |
| hasRole | ceremonial and religious head of state of Japan ⓘ |
| house | Imperial House of Japan NERFINISHED ⓘ |
| language | Classical Japanese ⓘ |
| mother | Fujiwara no Akirakeiko NERFINISHED ⓘ |
| notableDescendant |
Ashikaga Takauji
NERFINISHED
ⓘ
Minamoto no Mitsunaka NERFINISHED ⓘ Minamoto no Tsunemoto NERFINISHED ⓘ Minamoto no Yorinobu NERFINISHED ⓘ Minamoto no Yoritomo NERFINISHED ⓘ Minamoto no Yoriyoshi NERFINISHED ⓘ Minamoto no Yoshiie NERFINISHED ⓘ Minamoto no Yoshitsune NERFINISHED ⓘ Tokugawa Ieyasu NERFINISHED ⓘ |
| notableFor |
being a progenitor of the Seiwa Genji line of the Minamoto clan
ⓘ
having many samurai and shoguns claim descent from him ⓘ |
| period | Heian period NERFINISHED ⓘ |
| posthumousName | Seiwa NERFINISHED ⓘ |
| predecessor | Emperor Montoku NERFINISHED ⓘ |
| reignEnd | 876 ⓘ |
| reignStart | 858 ⓘ |
| religion |
Buddhism
ⓘ
Shinto ⓘ |
| royalHouse | Yamato NERFINISHED ⓘ |
| styleOfAddress | Tennō NERFINISHED ⓘ |
| successor | Emperor Yōzei NERFINISHED ⓘ |
| successorAsCrownPrince | Prince Sadaakira (Emperor Yōzei) NERFINISHED ⓘ |
| title | 110th Emperor of Japan ⓘ |
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: Emperor Seiwa Description of subject: Emperor Seiwa was a 9th-century Japanese emperor whose descendants founded the influential Seiwa Genji branch of the Minamoto clan, from which many prominent samurai, including the first shoguns, claimed lineage.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.