Reiwa
E6280
Reiwa is the current era of Japan’s official calendar, which began in 2019 with the accession of Emperor Naruhito.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Reiwa era | 8 |
| Reiwa period | 7 |
| Reiwa canonical | 6 |
| Reiwa era of Japan | 1 |
| 令和 | 1 |
| 令和時代 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T51503 — 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: Reiwa Context triple: [Naruhito, eraName, Reiwa]
-
A.
Kimigayo
Kimigayo is the national anthem of Japan, known for its extremely short length and lyrics derived from a Heian-period waka poem expressing wishes for the emperor’s enduring reign.
-
B.
Naruhito
Naruhito is the Emperor of Japan and the symbolic head of state of the country.
-
C.
Taisho era
The Taisho era was a period in Japanese history from 1912 to 1926 marked by political liberalization, cultural modernization, and the growth of urban middle-class society.
-
D.
Showa era
The Shōwa era was the period of Emperor Hirohito’s reign in Japan (1926–1989), marked by militarization and World War II, followed by rapid postwar economic growth and modernization.
-
E.
Meiji era
The Meiji era was a transformative period in Japanese history (1868–1912) marked by rapid modernization, industrialization, and the establishment of Western-style political, educational, and social institutions.
- 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: Reiwa Target entity description: Reiwa is the current era of Japan’s official calendar, which began in 2019 with the accession of Emperor Naruhito.
-
A.
Kimigayo
Kimigayo is the national anthem of Japan, known for its extremely short length and lyrics derived from a Heian-period waka poem expressing wishes for the emperor’s enduring reign.
-
B.
Naruhito
Naruhito is the Emperor of Japan and the symbolic head of state of the country.
-
C.
Taisho era
The Taisho era was a period in Japanese history from 1912 to 1926 marked by political liberalization, cultural modernization, and the growth of urban middle-class society.
-
D.
Showa era
The Shōwa era was the period of Emperor Hirohito’s reign in Japan (1926–1989), marked by militarization and World War II, followed by rapid postwar economic growth and modernization.
-
E.
Meiji era
The Meiji era was a transformative period in Japanese history (1868–1912) marked by rapid modernization, industrialization, and the establishment of Western-style political, educational, and social institutions.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese era
ⓘ
calendar era ⓘ |
| alsoKnownAs |
Reiwa era
ⓘ
linked to:
Reiwa
|
| announcedBy |
Government of Japan
ⓘ
Prime Minister Shinzō Abe ⓘ
linked to:
Shinzo Abe
|
| associatedInstitution | Imperial Household Agency ⓘ |
| associatedMonarchTitle | Emperor of Japan ⓘ |
| calendarContext | gengō system ⓘ |
| calendarRelation | corresponds to Gregorian calendar years from 2019 onward ⓘ |
| calendarSystem | Japanese calendar ⓘ |
| chronologicalPosition | era after Heisei in the Japanese calendar ⓘ |
| country | Japan ⓘ |
| culturalSignificance | symbol of a new imperial reign ⓘ |
| emperor | Naruhito ⓘ |
| eraCode | R ⓘ |
| eraNameProclaimedOn | 2019-04-01 ⓘ |
| eraNameSelectionProcess | chosen by cabinet from expert-proposed candidates ⓘ |
| eraNumber | current era in the modern sequence Shōwa–Heisei–Reiwa ⓘ |
| eraYearOne | 2019 ⓘ |
| firstEraNameDerivedFrom | classical Japanese literature ⓘ |
| follows | Heisei ⓘ |
| geopoliticalScope |
State of Japan
ⓘ
linked to:
Japan
|
| kanjiCharacters | 令和 ⓘ |
| languageOfName | Japanese ⓘ |
| legalBasis | Act on National Holidays and related cabinet orders ⓘ |
| meaning | beautiful harmony ⓘ |
| namedAfter | Man'yōshū ⓘ |
| occasionForStart | accession of Emperor Naruhito ⓘ |
| predecessorEmperor | Akihito ⓘ |
| previousEraNameDerivedFrom | classical Chinese literature ⓘ |
| romanization | Reiwa ⓘ |
| startDate | 2019-05-01 ⓘ |
| status | current era of Japan ⓘ |
| timePeriod | 21st century ⓘ |
| typeOfEventForStart | imperial succession ⓘ |
| usedIn |
Japanese era-based dating
ⓘ
Japanese government publications ⓘ Japanese official documents ⓘ |
| writingSystemOfName | kanji ⓘ |
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: Reiwa Description of subject: Reiwa is the current era of Japan’s official calendar, which began in 2019 with the accession of Emperor Naruhito.
Referenced by (24)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Emperor
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
subject linked to:
Kenji to Shokei no gi (ceremony of inheritance of the Regalia)
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa
linked to: Reiwa