Empress Masako
E12642
Empress consort of Japan
Harvard University alumna
Oxford alumna
University of Tokyo alumna
former diplomat
living person
member of the Japanese imperial family
Empress Masako is the current Empress of Japan, a Harvard-educated former diplomat known for her international background and marriage to Emperor Naruhito.
All labels observed (9)
| Label | Occurrences |
|---|---|
| Empress Masako canonical | 15 |
| 皇后雅子 | 5 |
| Empress Masako of Japan | 3 |
| Crown Princess of Japan | 2 |
| 雅子皇后 | 2 |
| Crown Princess Masako | 1 |
| Masako, Crown Princess of Japan | 1 |
| Masako, Empress of Japan | 1 |
| 雅子さま | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T51508 — 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: Empress Masako Context triple: [Naruhito, spouse, Empress Masako]
-
A.
Naruhito
Naruhito is the Emperor of Japan and the symbolic head of state of the country.
-
B.
Akihito
Akihito is the former Emperor of Japan who abdicated in 2019, ending the Heisei era and becoming the first Japanese monarch to step down in over two centuries.
-
C.
Emperor Hirohito
Emperor Hirohito was the Shōwa-era emperor of Japan who reigned during World War II and oversaw the country’s militarist expansion, defeat, and subsequent postwar reconstruction.
-
D.
Yuko Kishida
Yuko Kishida is the wife of Japanese Prime Minister Fumio Kishida and serves as Japan’s First Lady, engaging in various diplomatic and public activities.
-
E.
Michiko
Michiko is the former Empress of Japan and the wife of Emperor Emeritus Akihito, known for being the first commoner to marry into the Japanese imperial family.
- 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: Empress Masako Target entity description: Empress Masako is the current Empress of Japan, a Harvard-educated former diplomat known for her international background and marriage to Emperor Naruhito.
-
A.
Naruhito
Naruhito is the Emperor of Japan and the symbolic head of state of the country.
-
B.
Akihito
Akihito is the former Emperor of Japan who abdicated in 2019, ending the Heisei era and becoming the first Japanese monarch to step down in over two centuries.
-
C.
Emperor Hirohito
Emperor Hirohito was the Shōwa-era emperor of Japan who reigned during World War II and oversaw the country’s militarist expansion, defeat, and subsequent postwar reconstruction.
-
D.
Yuko Kishida
Yuko Kishida is the wife of Japanese Prime Minister Fumio Kishida and serves as Japan’s First Lady, engaging in various diplomatic and public activities.
-
E.
Michiko
Michiko is the former Empress of Japan and the wife of Emperor Emeritus Akihito, known for being the first commoner to marry into the Japanese imperial family.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Empress consort of Japan
ⓘ
Harvard University alumna ⓘ Oxford alumna ⓘ University of Tokyo alumna ⓘ former diplomat ⓘ living person ⓘ member of the Japanese imperial family ⓘ |
| becameCrownPrincessOn | 1993-06-09 ⓘ |
| birthName | Masako Owada ⓘ |
| child |
Aiko, Princess Toshi
ⓘ
surface form:
Princess Aiko
|
| countryOfCitizenship | Japan ⓘ |
| dateOfBirth | 1963-12-09 ⓘ |
| educatedAt |
Balliol College, Oxford
ⓘ
Harvard University ⓘ Radcliffe Institute for Advanced Study ⓘ
surface form:
Radcliffe College
University of Tokyo ⓘ |
| employer | Ministry of Foreign Affairs of Japan ⓘ |
| era |
Reiwa
ⓘ
surface form:
Reiwa era
|
| familyName | Owada ⓘ |
| father | Hisashi Owada ⓘ |
| fieldOfStudy |
economics
ⓘ
law ⓘ |
| givenName |
Masako Owada
ⓘ
surface form:
Masako
|
| honorificTitle |
Her Majesty
ⓘ
surface form:
Her Majesty The Empress
|
| house | Imperial House of Japan ⓘ |
| languageSpoken |
English
ⓘ
French ⓘ German ⓘ Japanese ⓘ |
| marriageDate | 1993-06-09 ⓘ |
| mother |
Masako Owada
ⓘ
surface form:
Yumiko Owada
|
| notableFor |
Harvard education
ⓘ
international background ⓘ role as Empress consort during the Reiwa era ⓘ |
| occupation | diplomat ⓘ |
| placeOfBirth | Minato, Tokyo, Japan ⓘ |
| positionHeld |
Empress of Japan
ⓘ
surface form:
Crown Princess of Japan
Empress of Japan ⓘ |
| predecessorAsEmpressConsort | Empress Michiko ⓘ |
| reignAsEmpressConsortBegan | 2019-05-01 ⓘ |
| religion | Shinto ⓘ |
| residence |
Tokyo Imperial Palace
ⓘ
surface form:
Imperial Palace, Tokyo
|
| spouse |
Naruhito
ⓘ
surface form:
Emperor Naruhito
|
| spouseReignBegan | 2019-05-01 ⓘ |
| spouseTitle | 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: Empress Masako Description of subject: Empress Masako is the current Empress of Japan, a Harvard-educated former diplomat known for her international background and marriage to Emperor Naruhito.
Referenced by (31)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Empress Masako of Japan
this entity surface form:
Crown Princess of Japan
this entity surface form:
Crown Princess Masako
this entity surface form:
Crown Princess of Japan
this entity surface form:
皇后雅子
this entity surface form:
Masako, Empress of Japan
this entity surface form:
Empress Masako of Japan
this entity surface form:
Empress Masako of Japan
this entity surface form:
Masako, Crown Princess of Japan