1854 Ansei-Tokai earthquake
E378922
The 1854 Ansei-Tokai earthquake was a major Edo-period megathrust earthquake and tsunami that struck central Japan, causing widespread destruction and loss of life along the Pacific coast.
All labels observed (3)
| Label | Occurrences |
|---|---|
| 1854 Ansei-Tokai earthquake canonical | 1 |
| Ansei great earthquakes | 1 |
| Ansei-Tōkai jishin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3646889 — 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: 1854 Ansei-Tokai earthquake Context triple: [Nankai Trough, associatedEarthquake, 1854 Ansei-Tokai earthquake]
-
A.
1944 Tonankai earthquake
The 1944 Tonankai earthquake was a powerful undersea megathrust earthquake off the coast of Japan that generated a destructive tsunami and caused extensive damage and loss of life in the Tōkai and Kii Peninsula regions during World War II.
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B.
Great Kanto earthquake
The Great Kanto earthquake was a devastating 1923 seismic disaster that struck the Tokyo-Yokohama region of Japan, causing massive destruction and loss of life.
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C.
1946 Nankai earthquake
The 1946 Nankai earthquake was a powerful megathrust earthquake off the coast of southwestern Japan that generated a destructive tsunami and caused widespread damage and casualties in the Nankai region.
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D.
Great Hanshin earthquake
The Great Hanshin earthquake was a devastating 1995 seismic disaster in Japan that caused widespread destruction and loss of life, particularly in the city of Kobe.
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E.
2011 Tōhoku earthquake and tsunami
The 2011 Tōhoku earthquake and tsunami was a devastating magnitude 9.0 undersea megathrust earthquake off Japan’s northeastern coast that triggered massive tsunamis, widespread destruction, and the Fukushima Daiichi nuclear disaster.
- 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: 1854 Ansei-Tokai earthquake Target entity description: The 1854 Ansei-Tokai earthquake was a major Edo-period megathrust earthquake and tsunami that struck central Japan, causing widespread destruction and loss of life along the Pacific coast.
-
A.
1944 Tonankai earthquake
The 1944 Tonankai earthquake was a powerful undersea megathrust earthquake off the coast of Japan that generated a destructive tsunami and caused extensive damage and loss of life in the Tōkai and Kii Peninsula regions during World War II.
-
B.
Great Kanto earthquake
The Great Kanto earthquake was a devastating 1923 seismic disaster that struck the Tokyo-Yokohama region of Japan, causing massive destruction and loss of life.
-
C.
1946 Nankai earthquake
The 1946 Nankai earthquake was a powerful megathrust earthquake off the coast of southwestern Japan that generated a destructive tsunami and caused widespread damage and casualties in the Nankai region.
-
D.
Great Hanshin earthquake
The Great Hanshin earthquake was a devastating 1995 seismic disaster in Japan that caused widespread destruction and loss of life, particularly in the city of Kobe.
-
E.
2011 Tōhoku earthquake and tsunami
The 2011 Tōhoku earthquake and tsunami was a devastating magnitude 9.0 undersea megathrust earthquake off Japan’s northeastern coast that triggered massive tsunamis, widespread destruction, and the Fukushima Daiichi nuclear disaster.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
historical event
ⓘ
megathrust earthquake ⓘ natural disaster ⓘ tsunami-generating earthquake ⓘ |
| affectedArea |
Ise Bay coast
ⓘ
Pacific coast of central Honshu ⓘ Suruga Bay coast ⓘ Tōkai coastal communities ⓘ |
| alsoKnownAs |
1854 Ansei-Tokai earthquake
ⓘ
surface form:
Ansei-Tōkai jishin
|
| casualties | thousands of deaths ⓘ |
| cause | subduction of the Philippine Sea Plate beneath the Eurasian Plate ⓘ |
| country | Japan ⓘ |
| damage |
severe tsunami inundation of coastal settlements
ⓘ
widespread destruction along the Pacific coast ⓘ |
| date | 1854-12-23 ⓘ |
| epicenterRegion | off the Tōkai coast ⓘ |
| era |
Ansei
ⓘ
surface form:
Ansei era
Edo period ⓘ |
| followedBy | 1854 Ansei-Nankai earthquake ⓘ |
| geologicalSignificance | evidence for segmented rupture along the Nankai Trough ⓘ |
| historicalRecords |
depicted in contemporary woodblock prints
ⓘ
documented in Edo-period chronicles ⓘ recorded in temple and shrine documents ⓘ |
| impact |
destruction of houses and infrastructure in coastal towns
ⓘ
loss of life among fishing and maritime communities ⓘ |
| languageOfName | Japanese ⓘ |
| locatedIn |
Tōkai region
ⓘ
central Japan ⓘ |
| locatedOn | Pacific coast of Japan ⓘ |
| magnitude | ~8.4 Mw ⓘ |
| partOf |
1854 Ansei-Tokai earthquake
self-linksurface differs
ⓘ
surface form:
Ansei great earthquakes
|
| precedes | modern Tōkai earthquake hazard scenarios ⓘ |
| region | Honshu ⓘ |
| sequence | part of a series of large 19th-century Nankai Trough earthquakes ⓘ |
| tectonicSetting | Nankai Trough ⓘ |
| triggered | tsunami ⓘ |
| tsunamiHeight | several meters in some coastal areas ⓘ |
| tsunamiType | local tsunami ⓘ |
| usedFor | paleoseismic and tsunami hazard assessment in central 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: 1854 Ansei-Tokai earthquake Description of subject: The 1854 Ansei-Tokai earthquake was a major Edo-period megathrust earthquake and tsunami that struck central Japan, causing widespread destruction and loss of life along the Pacific coast.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ansei great earthquakes
this entity surface form:
Ansei-Tōkai jishin