1944 Tonankai earthquake
E375877
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 1944 Tonankai earthquake canonical | 4 |
| 1944 Tōnankai earthquake | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3646887 — 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: 1944 Tonankai earthquake Context triple: [Nankai Trough, lastMajorEarthquakeSequence, 1944 Tonankai earthquake]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
2005 Nias–Simeulue earthquake
The 2005 Nias–Simeulue earthquake was a powerful magnitude 8.6 megathrust earthquake off the coast of northern Sumatra that caused widespread destruction and significant casualties in Indonesia.
-
E.
Tumpa! (Earthquake)
"Tumpa! (Earthquake)" is a song by the Mexican electronic music duo Voice of the Xtabay, known for its energetic, experimental sound.
- 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: 1944 Tonankai earthquake Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
2005 Nias–Simeulue earthquake
The 2005 Nias–Simeulue earthquake was a powerful magnitude 8.6 megathrust earthquake off the coast of northern Sumatra that caused widespread destruction and significant casualties in Indonesia.
-
E.
Tumpa! (Earthquake)
"Tumpa! (Earthquake)" is a song by the Mexican electronic music duo Voice of the Xtabay, known for its energetic, experimental sound.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
megathrust earthquake
ⓘ
tsunami-generating earthquake ⓘ |
| alsoKnownAs | Tōnankai jishin ⓘ |
| buildingsDestroyed | tens of thousands of houses destroyed or damaged ⓘ |
| casualties | over 1,200 deaths ⓘ |
| category |
Earthquakes in Japan
ⓘ
Megathrust earthquakes ⓘ Tsunamis in Japan ⓘ |
| country | Japan ⓘ |
| countryAtTime |
Empire of Japan
ⓘ
linked to:
Imperial Japan
|
| date | 1944-12-07 ⓘ |
| depth | ~30 km ⓘ |
| economicImpact | severe damage to infrastructure and housing in central Japan ⓘ |
| epicenter | off the Kii Peninsula, Japan ⓘ |
| epicenterRegion | off the coast of Mie Prefecture ⓘ |
| faultType | thrust fault ⓘ |
| generated | tsunami ⓘ |
| influenced | development of Japanese earthquake and tsunami research ⓘ |
| injuries | several thousand injured ⓘ |
| languageOfAlternateName | Japanese ⓘ |
| location |
Nankai Trough
ⓘ
off the southern coast of Honshu, Japan ⓘ |
| magnitude | 8.1 Mw ⓘ |
| magnitudeType | moment magnitude scale ⓘ |
| mainlyAffectedPrefecture |
Aichi Prefecture
ⓘ
Gifu Prefecture ⓘ Mie Prefecture ⓘ Nara Prefecture ⓘ Shizuoka Prefecture ⓘ Wakayama Prefecture ⓘ |
| maximumIntensity | VIII (Severe) on the JMA intensity scale ⓘ |
| occurredDuring | World War II ⓘ |
| partOf |
Nankai megathrust earthquake sequence
ⓘ
linked to:
Nankai megathrust
|
| regionAffected |
Chubu region
ⓘ
linked to:
Chūbu region
Kansai region ⓘ Kii Peninsula ⓘ Shikoku ⓘ Tōkai region ⓘ |
| relatedEvent | 1944 Tōnankai earthquake tsunami ⓘ |
| ruptureZone |
Tonankai segment of the Nankai Trough
ⓘ
linked to:
Nankai Trough
|
| sequenceWith | 1946 Nankai earthquake ⓘ |
| tectonicPlate |
Eurasian Plate
ⓘ
Philippine Sea Plate ⓘ |
| tectonicSetting | subduction zone ⓘ |
| time | 13:35 JST ⓘ |
| tsunamiAffectedArea |
Pacific coast of central Japan
ⓘ
linked to:
Pacific coast of Japan
|
| tsunamiDamage | coastal flooding and destruction of fishing villages ⓘ |
| tsunamiMaximumHeight | ~10 m ⓘ |
| year | 1944 ⓘ |
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: 1944 Tonankai earthquake Description of subject: 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.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 1944 Tonankai earthquake