Heian period
E13217
The Heian period was a classical era of Japanese history (794–1185) marked by an imperial court-centered culture, flourishing literature such as The Tale of Genji, and the development of a distinct Japanese aesthetic.
All labels observed (14)
| Label | Occurrences |
|---|---|
| Heian period canonical | 109 |
| late Heian period | 16 |
| Heian Japan | 10 |
| early Heian period | 9 |
| Heian court | 3 |
| Classical Japan | 1 |
| Heian | 1 |
| Heian era | 1 |
| Heian period (fictional setting) | 1 |
| Heian period Japan | 1 |
| Jōgan era | 1 |
| Mid-Heian period | 1 |
| classical Japan | 1 |
| 平安時代 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T105690 — 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: Heian period Context triple: [Kimigayo, hasTextOriginPeriod, Heian period]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Heisei
Heisei is the Japanese era name corresponding to the reign of Emperor Akihito, spanning from 1989 to 2019.
-
E.
Reiwa
Reiwa is the current era of Japan’s official calendar, which began in 2019 with the accession of Emperor Naruhito.
- 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: Heian period Target entity description: The Heian period was a classical era of Japanese history (794–1185) marked by an imperial court-centered culture, flourishing literature such as The Tale of Genji, and the development of a distinct Japanese aesthetic.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Heisei
Heisei is the Japanese era name corresponding to the reign of Emperor Akihito, spanning from 1989 to 2019.
-
E.
Reiwa
Reiwa is the current era of Japan’s official calendar, which began in 2019 with the accession of Emperor Naruhito.
- F. None of above. chosen
Statements (67)
| Predicate | Object |
|---|---|
| instanceOf |
historical period
ⓘ
period of Japanese history ⓘ |
| artStyle |
emaki-mono
ⓘ
yamato-e ⓘ |
| capital |
Kyoto
ⓘ
surface form:
Heian-kyō
Kyoto ⓘ |
| country | Japan ⓘ |
| culturalSphere | Japanese court culture ⓘ |
| endCause |
establishment of Kamakura shogunate
ⓘ
rise of samurai government ⓘ |
| endTime | 1185 ⓘ |
| followedBy | Kamakura period ⓘ |
| governmentForm | imperial monarchy ⓘ |
| hasCharacteristic |
Buddhist cultural influence
ⓘ
Shinto-Buddhist syncretism ⓘ aristocratic dominance ⓘ court-centered culture ⓘ courtly romance literature ⓘ development of Japanese aesthetics ⓘ development of yamato-e painting ⓘ emergence of kana syllabary ⓘ emphasis on poetry ⓘ flourishing literature ⓘ increasing provincial warrior power ⓘ political power of regent families ⓘ refined court rituals ⓘ rise of samurai class ⓘ |
| language | Classical Japanese ⓘ |
| locatedInTimePeriod |
Heian period
self-linksurface differs
ⓘ
surface form:
classical Japan
|
| majorEvent |
Genpei War
ⓘ
Hōgen Rebellion ⓘ
surface form:
Heiji Rebellion
Hōgen Rebellion ⓘ Jōgan era reforms ⓘ establishment of Fujiwara regency ⓘ relocation of capital to Heian-kyō ⓘ |
| namedAfter |
Kyoto
ⓘ
surface form:
Heian-kyō
|
| politicalStructure |
aristocratic regency
ⓘ
insei (cloistered rule) ⓘ |
| precededBy | Nara period ⓘ |
| religion |
Buddhism
ⓘ
Shingon Buddhism ⓘ Shinto ⓘ Tendai Buddhism ⓘ |
| significantPerson |
Emperor Daigo
ⓘ
Emperor Shirakawa ⓘ
surface form:
Emperor Go-Shirakawa
Emperor Kanmu ⓘ Emperor Shirakawa ⓘ Fujiwara no Michinaga ⓘ Fujiwara no Yorimichi ⓘ Ki no Tsurayuki ⓘ Minamoto no Yoritomo ⓘ Minamoto no Yoshitsune ⓘ Murasaki Shikibu ⓘ Ono no Komachi ⓘ Saigyō ⓘ Sei Shōnagon ⓘ Sugawara no Michizane ⓘ Taira no Kiyomori ⓘ |
| significantWork |
Ise Monogatari
ⓘ
Kokin Wakashū ⓘ The Pillow Book ⓘ The Tale of Genji ⓘ Ōkagami ⓘ |
| startTime | 794 ⓘ |
| writingSystem |
hiragana
ⓘ
kanji ⓘ katakana ⓘ |
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: Heian period Description of subject: The Heian period was a classical era of Japanese history (794–1185) marked by an imperial court-centered culture, flourishing literature such as The Tale of Genji, and the development of a distinct Japanese aesthetic.
Referenced by (156)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
early Heian period
this entity surface form:
late Heian period
this entity surface form:
Heian Japan
this entity surface form:
late Heian period
this entity surface form:
early Heian period
this entity surface form:
early Heian period
this entity surface form:
Heian period Japan
this entity surface form:
late Heian period
this entity surface form:
late Heian period
this entity surface form:
Classical Japan
this entity surface form:
late Heian period
subject surface form:
Saio-dai
this entity surface form:
late Heian period
this entity surface form:
Heian Japan
this entity surface form:
Heian period (fictional setting)
this entity surface form:
Heian Japan
this entity surface form:
Heian court
this entity surface form:
Heian Japan
this entity surface form:
late Heian period
this entity surface form:
late Heian period
this entity surface form:
late Heian period
this entity surface form:
late Heian period
this entity surface form:
Heian