Ansei
E626484
Ansei was a Japanese era in the mid-19th century marked by political unrest, foreign pressure to open Japan, and significant natural disasters.
All labels observed (3)
How this entity was disambiguated
This entity first appeared as the object of triple T6897239 — 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: Ansei Context triple: [Emperor Kōmei, eraNameUsedDuringReign, Ansei]
-
A.
Ōshima Yoshimasa
Ōshima Yoshimasa was an Imperial Japanese Army general best known for his leadership during the First Sino-Japanese War, including commanding Japanese forces at the Battle of Seonghwan.
-
B.
Ten'ō
Ten'ō was a short Japanese era in the late 8th century, preceding the Enryaku era during the reign of Emperor Kanmu.
-
C.
Shigenobu
Shigenobu is a Japanese given name notably borne by Ōkuma Shigenobu, a prominent Meiji-era statesman and former Prime Minister of Japan.
-
D.
Sei-i Taishōgun
Sei-i Taishōgun was the title of Japan’s military dictator, commonly known as the shogun, who wielded de facto political power while the emperor remained a ceremonial figurehead.
-
E.
Ikeda Terumasa
Ikeda Terumasa was a prominent early Edo-period Japanese daimyo known for his major role in developing and fortifying Himeji Castle into its iconic form.
- 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: Ansei Target entity description: Ansei was a Japanese era in the mid-19th century marked by political unrest, foreign pressure to open Japan, and significant natural disasters.
-
A.
Ōshima Yoshimasa
Ōshima Yoshimasa was an Imperial Japanese Army general best known for his leadership during the First Sino-Japanese War, including commanding Japanese forces at the Battle of Seonghwan.
-
B.
Ten'ō
Ten'ō was a short Japanese era in the late 8th century, preceding the Enryaku era during the reign of Emperor Kanmu.
-
C.
Shigenobu
Shigenobu is a Japanese given name notably borne by Ōkuma Shigenobu, a prominent Meiji-era statesman and former Prime Minister of Japan.
-
D.
Sei-i Taishōgun
Sei-i Taishōgun was the title of Japan’s military dictator, commonly known as the shogun, who wielded de facto political power while the emperor remained a ceremonial figurehead.
-
E.
Ikeda Terumasa
Ikeda Terumasa was a prominent early Edo-period Japanese daimyo known for his major role in developing and fortifying Himeji Castle into its iconic form.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese era name
ⓘ
historical period ⓘ |
| associatedWith |
Britain
NERFINISHED
ⓘ
France NERFINISHED ⓘ Netherlands NERFINISHED ⓘ Russia NERFINISHED ⓘ United States NERFINISHED ⓘ |
| calendarSystem | Japanese lunisolar calendar ⓘ |
| capital | Edo NERFINISHED ⓘ |
| causeOfChange | signing of treaties with Western powers ⓘ |
| characterizedBy |
foreign pressure to open Japan
ⓘ
natural disasters ⓘ political unrest ⓘ sonnō jōi movement NERFINISHED ⓘ unequal treaties ⓘ |
| country | Japan ⓘ |
| currency | Tokugawa coinage NERFINISHED ⓘ |
| endDate | 1860-03-18 ⓘ |
| endYear | 1860 ⓘ |
| eraNameMeaning | tranquil government ⓘ |
| follows | Kaei NERFINISHED ⓘ |
| governmentType | feudal military government ⓘ |
| hasEraCode | 安政 NERFINISHED ⓘ |
| hasLanguage | Japanese ⓘ |
| hasTypeOfDisaster |
earthquakes
ⓘ
tsunamis ⓘ |
| location | Tokugawa shogunate NERFINISHED ⓘ |
| notableEvent |
Ansei Edo earthquake
NERFINISHED
ⓘ
Ansei Nankai earthquake NERFINISHED ⓘ Ansei Purge NERFINISHED ⓘ Ansei Treaties NERFINISHED ⓘ Ansei Tōkai earthquake NERFINISHED ⓘ Ansei great earthquakes NERFINISHED ⓘ Harris Treaty NERFINISHED ⓘ Sakuradamon Incident (1860) NERFINISHED ⓘ |
| partOf | Bakumatsu NERFINISHED ⓘ |
| period | Edo period NERFINISHED ⓘ |
| precedes | Man’en NERFINISHED ⓘ |
| reigningEmperor | Emperor Kōmei NERFINISHED ⓘ |
| relatedTo |
Hakodate port opening
NERFINISHED
ⓘ
Shimoda port opening ⓘ Yokohama port opening ⓘ opening of Japanese ports ⓘ |
| shogun |
Tokugawa Iemochi
NERFINISHED
ⓘ
Tokugawa Iesada NERFINISHED ⓘ |
| startDate | 1854-11-27 ⓘ |
| startYear | 1854 ⓘ |
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: Ansei Description of subject: Ansei was a Japanese era in the mid-19th century marked by political unrest, foreign pressure to open Japan, and significant natural disasters.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tenshō
this entity surface form:
Ansei era
this entity surface form:
Ansei era