One-Eyed Dragon of Ōshu
E770818
One-Eyed Dragon of Ōshu is the famous nickname of Japanese warlord Date Masamune, a powerful and charismatic daimyo of the late Sengoku period known for his missing eye, crescent-moon helmet, and role in unifying northern Japan.
All labels observed (4)
| Label | Occurrences |
|---|---|
| One-Eyed Dragon of Ōshu canonical | 2 |
| One-Eyed Dragon | 1 |
| One-Eyed Dragon of Oshu | 1 |
| 独眼竜 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9007827 — 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: One-Eyed Dragon of Ōshu Context triple: [Date Masamune, honorificTitle, One-Eyed Dragon of Ōshu]
-
A.
Nukata no Ōkimi
Nukata no Ōkimi was a 7th-century Japanese imperial princess and celebrated poet whose works are preserved in the Man'yōshū anthology.
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B.
Prince of Takamado
Prince of Takamado is a Japanese imperial title held by a male member of the Emperor’s extended family, associated with the Takamado branch of the Imperial House.
-
C.
King of Anzan
The King of Anzan was an ancient Elamite ruler associated with the important highland region of Anshan in southwestern Iran, often linked to early Persian royal traditions.
-
D.
Ōkagami
Ōkagami is a Japanese historical tale (rekishi monogatari) that offers a semi-fictionalized chronicle of court politics and aristocratic life surrounding the Fujiwara clan during the Heian period.
-
E.
Kaga Hyakumangoku
Kaga Hyakumangoku refers to the historical wealth and prosperity of Japan’s Kaga Domain, famed for its rich culture, powerful feudal lords, and flourishing arts and crafts.
- 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: One-Eyed Dragon of Ōshu Target entity description: One-Eyed Dragon of Ōshu is the famous nickname of Japanese warlord Date Masamune, a powerful and charismatic daimyo of the late Sengoku period known for his missing eye, crescent-moon helmet, and role in unifying northern Japan.
-
A.
Nukata no Ōkimi
Nukata no Ōkimi was a 7th-century Japanese imperial princess and celebrated poet whose works are preserved in the Man'yōshū anthology.
-
B.
Prince of Takamado
Prince of Takamado is a Japanese imperial title held by a male member of the Emperor’s extended family, associated with the Takamado branch of the Imperial House.
-
C.
King of Anzan
The King of Anzan was an ancient Elamite ruler associated with the important highland region of Anshan in southwestern Iran, often linked to early Persian royal traditions.
-
D.
Ōkagami
Ōkagami is a Japanese historical tale (rekishi monogatari) that offers a semi-fictionalized chronicle of court politics and aristocratic life surrounding the Fujiwara clan during the Heian period.
-
E.
Kaga Hyakumangoku
Kaga Hyakumangoku refers to the historical wealth and prosperity of Japan’s Kaga Domain, famed for its rich culture, powerful feudal lords, and flourishing arts and crafts.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | nickname ⓘ |
| appliedTo |
Japanese warlord
ⓘ
daimyo ⓘ |
| associatedWithClan | Date clan ⓘ |
| associatedWithHistoricalFigure |
Tokugawa Ieyasu
ⓘ
Toyotomi Hideyoshi ⓘ |
| associatedWithPeriod | late Sengoku period ⓘ |
| associatedWithRegion |
northern Japan
ⓘ
Ōshu ⓘ
linked to:
Ōshū
|
| associatedWithTrait |
bold tactics
ⓘ
independent spirit ⓘ one-eyed appearance ⓘ |
| denotesOrigin |
Ōshu region
ⓘ
linked to:
Ōshū region
|
| denotesReputation |
ambitious ruler
ⓘ
fearsome warrior ⓘ strategic genius ⓘ |
| denotesRole | unifier of northern Japan ⓘ |
| denotesVisualIcon |
black armor
ⓘ
crescent-moon maedate on helmet ⓘ |
| hasCharacteristic |
charismatic leadership
ⓘ
crescent-moon helmet ⓘ military prowess ⓘ missing eye ⓘ |
| hasNotableFeature |
emphasizes martial ferocity
ⓘ
emphasizes regional power in the north ⓘ evokes fear and respect ⓘ |
| language | Japanese ⓘ |
| refersTo | Date Masamune ⓘ |
| refersToPersonWithActivity |
castle builder
ⓘ
feudal lord under Tokugawa shogunate ⓘ regional unifier ⓘ |
| refersToPersonWithReligion |
Buddhist
ⓘ
patron of Christian missionaries ⓘ |
| refersToPersonWithResidence |
Aoba Castle
ⓘ
Sendai ⓘ |
| refersToPersonWithTitle |
daimyo of Sendai Domain
ⓘ
lord of the Date clan ⓘ |
| symbolizedBy |
crescent-moon helmet
ⓘ
dragon imagery ⓘ |
| timeOfUse |
Azuchi–Momoyama period
ⓘ
early Edo period ⓘ |
| usedIn |
anime
ⓘ
historical literature ⓘ manga ⓘ popular culture ⓘ samurai dramas ⓘ video games ⓘ |
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: One-Eyed Dragon of Ōshu Description of subject: One-Eyed Dragon of Ōshu is the famous nickname of Japanese warlord Date Masamune, a powerful and charismatic daimyo of the late Sengoku period known for his missing eye, crescent-moon helmet, and role in unifying northern Japan.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.