Great Kanto earthquake
E24973
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.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Great Kantō earthquake | 5 |
| 1923 Great Kantō earthquake | 4 |
| Great Kanto Earthquake | 4 |
| Great Kanto earthquake canonical | 2 |
| 1923 Great Kanto earthquake | 1 |
| Great Kantō earthquake of 1923 | 1 |
| 関東大震災 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T196661 — 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: Great Kanto earthquake Context triple: [Taisho era, majorEvent, Great Kanto earthquake]
-
A.
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.
-
B.
1906 San Francisco earthquake
The 1906 San Francisco earthquake was a devastating magnitude 7.8 seismic event that struck Northern California, causing widespread destruction and fires that nearly leveled San Francisco and became one of the worst natural disasters in U.S. history.
-
C.
Hyogo Prefecture
Hyogo Prefecture is a large and diverse region in Japan’s Kansai area, known for the port city of Kobe, Himeji Castle, and a mix of urban centers, hot springs, and rural landscapes along the Sea of Japan and Seto Inland Sea.
-
D.
1755 Lisbon earthquake
The 1755 Lisbon earthquake was a devastating seismic event that struck Portugal’s capital on All Saints’ Day, triggering massive fires and a tsunami, and profoundly influencing European philosophy, science, and urban planning.
-
E.
1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
- 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: Great Kanto earthquake Target entity description: 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.
-
A.
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.
-
B.
1906 San Francisco earthquake
The 1906 San Francisco earthquake was a devastating magnitude 7.8 seismic event that struck Northern California, causing widespread destruction and fires that nearly leveled San Francisco and became one of the worst natural disasters in U.S. history.
-
C.
Hyogo Prefecture
Hyogo Prefecture is a large and diverse region in Japan’s Kansai area, known for the port city of Kobe, Himeji Castle, and a mix of urban centers, hot springs, and rural landscapes along the Sea of Japan and Seto Inland Sea.
-
D.
1755 Lisbon earthquake
The 1755 Lisbon earthquake was a devastating seismic event that struck Portugal’s capital on All Saints’ Day, triggering massive fires and a tsunami, and profoundly influencing European philosophy, science, and urban planning.
-
E.
1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
- F. None of above. chosen
Statements (59)
| Predicate | Object |
|---|---|
| instanceOf |
earthquake
ⓘ
historical event ⓘ natural disaster ⓘ |
| affectedCity |
Kawasaki
ⓘ
Tokyo ⓘ Yokohama ⓘ Yokosuka ⓘ |
| aftershocksDuration | several months ⓘ |
| alsoKnownAs |
Great Kanto earthquake
ⓘ
surface form:
1923 Great Kanto earthquake
Kanto Daishinsai ⓘ |
| associatedPogrom |
Kanto Massacre of Koreans
ⓘ
surface form:
Kanto Massacre
|
| casualtiesEstimate |
105000
ⓘ
over 100000 deaths ⓘ |
| causedBy | subduction of the Philippine Sea Plate beneath the Okhotsk Plate ⓘ |
| commemoratedOn | Disaster Prevention Day ⓘ |
| commemorationDate | September 1 ⓘ |
| country | Japan ⓘ |
| crownPrinceDuringEvent |
Emperor Hirohito
ⓘ
surface form:
Hirohito
|
| date | 1923-09-01 ⓘ |
| day | 1 ⓘ |
| depth | 23 km ⓘ |
| destroyedBuildingsEstimate | over 570000 houses ⓘ |
| displacedPeople | over 1 million ⓘ |
| economicImpact | severe damage to Japanese economy ⓘ |
| emperorDuringEvent |
Emperor Taishō
ⓘ
surface form:
Emperor Taisho
|
| epicenter | Sagami Bay ⓘ |
| governmentResponse | emergency decree by Japanese government ⓘ |
| historicalSignificance |
major turning point in modern Japanese urban development
ⓘ
one of the deadliest earthquakes in Japanese history ⓘ |
| homelessPeopleEstimate | over 1.9 million ⓘ |
| injuriesEstimate | hundreds of thousands injured ⓘ |
| JapaneseName |
Great Kanto earthquake
self-linksurface differs
ⓘ
surface form:
関東大震災
|
| languageOfName | Japanese ⓘ |
| ledTo |
mass violence against Koreans in Japan
ⓘ
strengthening of building codes in Japan ⓘ urban planning reforms in Tokyo ⓘ |
| location |
Chiba
ⓘ
surface form:
Chiba Prefecture
Kanagawa Prefecture ⓘ Kantō region ⓘ
surface form:
Kanto region
Saitama Prefecture ⓘ Shizuoka Prefecture ⓘ Tokyo ⓘ Yokohama ⓘ |
| magnitude |
7.9 Ms
ⓘ
7.9 Mw ⓘ |
| mainCauseOfDamage | fire ⓘ |
| maximumIntensity | X (Extreme) on the Mercalli intensity scale ⓘ |
| month | September ⓘ |
| notableIncident | Great Tokyo fire whirl at Rikugun Honjo Hifukusho ⓘ |
| plateBoundary | subduction zone ⓘ |
| reconstructionProgram | Tokyo reconstruction plan ⓘ |
| region | Honshu ⓘ |
| time | 11:58 JST ⓘ |
| triggered |
fires
ⓘ
landslides ⓘ tsunami in Sagami Bay ⓘ |
| tsunami | yes ⓘ |
| type | megathrust earthquake ⓘ |
| year | 1923 ⓘ |
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: Great Kanto earthquake Description of subject: 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.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Great Kantō earthquake of 1923
this entity surface form:
Great Kantō earthquake
this entity surface form:
1923 Great Kanto earthquake
this entity surface form:
関東大震災
this entity surface form:
Great Kanto Earthquake
this entity surface form:
1923 Great Kantō earthquake
this entity surface form:
Great Kantō earthquake
this entity surface form:
Great Kantō earthquake
this entity surface form:
1923 Great Kantō earthquake
this entity surface form:
Great Kantō earthquake
this entity surface form:
1923 Great Kantō earthquake
this entity surface form:
Great Kanto Earthquake
subject surface form:
Earthquake Research Institute
this entity surface form:
1923 Great Kantō earthquake
this entity surface form:
Great Kantō earthquake
this entity surface form:
Great Kanto Earthquake
this entity surface form:
Great Kanto Earthquake