Ōyama Iwao
E64635
Ōyama Iwao was a prominent Meiji-era Japanese field marshal and statesman who played key leadership roles in Japan’s early modern wars and military modernization.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ōyama Iwao canonical | 7 |
| Iwao | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T399372 — 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: Ōyama Iwao Context triple: [First Sino-Japanese War, commander, Ōyama Iwao]
-
A.
Gotō Shinpei
Gotō Shinpei was a prominent Japanese statesman and colonial administrator known for modernizing Taiwan’s infrastructure and governance during early Japanese rule and later serving in top government posts in Japan.
-
B.
Masayuki Kakefu
Masayuki Kakefu is a former Japanese professional baseball slugger and third baseman best known for his starring role with the Hanshin Tigers in the 1970s and 1980s.
-
C.
Masaru Ibuka
Masaru Ibuka was a Japanese electronics engineer and entrepreneur best known as the co-founder of Sony Corporation and a pioneer of Japan’s postwar consumer electronics industry.
-
D.
Mineichi Koga
Mineichi Koga was an admiral in the Imperial Japanese Navy who succeeded Isoroku Yamamoto as commander-in-chief of the Combined Fleet during World War II.
-
E.
Okamura Yasuji
Okamura Yasuji was a senior Imperial Japanese Army general who played a leading role in Japan’s military campaigns in China during the Second Sino-Japanese War.
- 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: Ōyama Iwao Target entity description: Ōyama Iwao was a prominent Meiji-era Japanese field marshal and statesman who played key leadership roles in Japan’s early modern wars and military modernization.
-
A.
Gotō Shinpei
Gotō Shinpei was a prominent Japanese statesman and colonial administrator known for modernizing Taiwan’s infrastructure and governance during early Japanese rule and later serving in top government posts in Japan.
-
B.
Masayuki Kakefu
Masayuki Kakefu is a former Japanese professional baseball slugger and third baseman best known for his starring role with the Hanshin Tigers in the 1970s and 1980s.
-
C.
Masaru Ibuka
Masaru Ibuka was a Japanese electronics engineer and entrepreneur best known as the co-founder of Sony Corporation and a pioneer of Japan’s postwar consumer electronics industry.
-
D.
Mineichi Koga
Mineichi Koga was an admiral in the Imperial Japanese Navy who succeeded Isoroku Yamamoto as commander-in-chief of the Combined Fleet during World War II.
-
E.
Okamura Yasuji
Okamura Yasuji was a senior Imperial Japanese Army general who played a leading role in Japan’s military campaigns in China during the Second Sino-Japanese War.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese military officer
ⓘ
Meiji-period person ⓘ field marshal ⓘ human ⓘ statesman ⓘ |
| allegiance |
Empire of Japan
ⓘ
linked to:
Japan
|
| associatedWith |
Imperial General Headquarters
ⓘ
Japanese Privy Council ⓘ
linked to:
Privy Council of Japan
|
| awardReceived |
Order of the Chrysanthemum
ⓘ
Order of the Golden Kite ⓘ Order of the Rising Sun ⓘ Order of the Sacred Treasure ⓘ |
| birthDate | 1842-11-12 ⓘ |
| birthPlace |
Kagoshima Domain
ⓘ
Kagoshima, Japan ⓘ Satsuma Province ⓘ
linked to:
Kagoshima Prefecture
|
| clan | Satsuma Domain samurai ⓘ |
| countryOfCitizenship | Japan ⓘ |
| deathDate | 1916-12-10 ⓘ |
| education |
studied military science in France
ⓘ
studied military science in Germany ⓘ |
| era |
Meiji period
ⓘ
linked to:
Meiji era
Taishō period ⓘ
linked to:
Taisho era
|
| familyName | Ōyama ⓘ |
| givenName |
Iwao
ⓘ
linked to:
Ōyama Iwao
|
| honorificTitle | genrō (elder statesman) ⓘ |
| language | Japanese ⓘ |
| militaryBranch | Imperial Japanese Army ⓘ |
| militaryRank |
Gensui (Field Marshal)
ⓘ
linked to:
Gensui (元帥)
|
| name | Ōyama Iwao ⓘ |
| nativeName | 大山巌 ⓘ |
| nobleTitle |
Marquess
ⓘ
Prince ⓘ |
| notableAchievement |
Commander-in-chief of Japanese forces in the Russo-Japanese War
ⓘ
Senior commander in the First Sino-Japanese War ⓘ |
| notableFor |
leadership in Japan’s early modern wars
ⓘ
role in Japanese military modernization ⓘ |
| notableRelative | Ōyama Tokugorō ⓘ |
| notableWork | leadership in modernization of the Imperial Japanese Army ⓘ |
| participatedIn |
Boshin War
ⓘ
First Sino-Japanese War ⓘ Russo-Japanese War ⓘ Satsuma Rebellion ⓘ |
| placeOfBurial |
Aoyama Cemetery
ⓘ
linked to:
Aoyama Cemetery, Tokyo
|
| positionHeld |
Army Minister of Japan
ⓘ
Chief of the General Staff (Imperial Japanese Army) ⓘ
linked to:
Chief of the Army General Staff (Japan)
Lord Keeper of the Privy Seal of Japan ⓘ Member of the House of Peers ⓘ War Minister of Japan ⓘ |
| spouse | Ōyama Sutematsu ⓘ |
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: Ōyama Iwao Description of subject: Ōyama Iwao was a prominent Meiji-era Japanese field marshal and statesman who played key leadership roles in Japan’s early modern wars and military modernization.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.