1957 Mexico City earthquake
E221682
The 1957 Mexico City earthquake was a powerful and destructive seismic event that struck Mexico City, causing significant damage to buildings and landmarks and resulting in numerous casualties.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1957 Mexico City earthquake canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1959000 — 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: 1957 Mexico City earthquake Context triple: [Angel of Independence, damagedBy, 1957 Mexico City earthquake]
-
A.
1985 Mexico City earthquake
The 1985 Mexico City earthquake was a devastating magnitude 8.0 seismic event that struck Mexico City on September 19, 1985, causing widespread destruction and significant loss of life.
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B.
1986 San Salvador earthquake
The 1986 San Salvador earthquake was a devastating magnitude 5.7 tremor that struck El Salvador’s capital region on October 10, 1986, causing widespread destruction and significant loss of life.
-
C.
2010 Chile earthquake
The 2010 Chile earthquake was a massive magnitude 8.8 megathrust quake off the coast of central Chile that caused widespread destruction, triggered a tsunami, and became one of the strongest earthquakes ever recorded.
-
D.
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.
-
E.
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.
- 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: 1957 Mexico City earthquake Target entity description: The 1957 Mexico City earthquake was a powerful and destructive seismic event that struck Mexico City, causing significant damage to buildings and landmarks and resulting in numerous casualties.
-
A.
1985 Mexico City earthquake
The 1985 Mexico City earthquake was a devastating magnitude 8.0 seismic event that struck Mexico City on September 19, 1985, causing widespread destruction and significant loss of life.
-
B.
1986 San Salvador earthquake
The 1986 San Salvador earthquake was a devastating magnitude 5.7 tremor that struck El Salvador’s capital region on October 10, 1986, causing widespread destruction and significant loss of life.
-
C.
2010 Chile earthquake
The 2010 Chile earthquake was a massive magnitude 8.8 megathrust quake off the coast of central Chile that caused widespread destruction, triggered a tsunami, and became one of the strongest earthquakes ever recorded.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
earthquake
ⓘ
natural disaster ⓘ |
| affectedArea |
Guerrero
ⓘ
Mexico City ⓘ central Mexico ⓘ |
| buildingDamage | widespread structural damage in Mexico City ⓘ |
| casualties |
hundreds of deaths
ⓘ
thousands of injuries ⓘ |
| category |
1957 disasters in Mexico
ⓘ
earthquakes in Mexico ⓘ history of Mexico City ⓘ |
| cause | sudden slip along the subduction interface off the coast of Guerrero ⓘ |
| comparedTo | 1985 Mexico City earthquake ⓘ |
| continent | North America ⓘ |
| country | Mexico ⓘ |
| countryCapitalAffected | Mexico City ⓘ |
| date | 1957-07-28 ⓘ |
| depth | approximately 20 km ⓘ |
| economicImpact | significant economic losses in Mexico City ⓘ |
| epicenterRegion | near Acapulco, Guerrero ⓘ |
| faultType | megathrust ⓘ |
| followedBy | 1979 Petatlán earthquake ⓘ |
| governmentResponse | emergency relief operations in Mexico City ⓘ |
| historicalSignificance | one of the most destructive earthquakes in mid-20th-century Mexico ⓘ |
| impactOnInfrastructure | collapse and severe damage to many buildings in Mexico City ⓘ |
| impactOnPopulation | displacement of residents in damaged areas of Mexico City ⓘ |
| inspiredEvent | reconstruction of the Angel of Independence ⓘ |
| languageOfReports | Spanish ⓘ |
| ledTo | revisions of building practices in Mexico City ⓘ |
| localTime | 02:40 ⓘ |
| location | Mexico City ⓘ |
| magnitude | 7.9 Mw ⓘ |
| magnitudeScale | moment magnitude scale ⓘ |
| maximumIntensity | VIII (Severe) on the Modified Mercalli intensity scale ⓘ |
| mediaCoverage | extensive coverage in Mexican newspapers and radio ⓘ |
| naturalHazardType | seismic event ⓘ |
| notableDamage | partial collapse of the Angel of Independence monument ⓘ |
| notableFeature | strong long-period ground motion in Mexico City ⓘ |
| partOf | history of earthquakes in Mexico ⓘ |
| precededBy | 1941 Guerrero earthquake ⓘ |
| recordedBy | seismological stations in Mexico ⓘ |
| seismicZone | Middle America Trench ⓘ |
| tectonicSetting | subduction of the Cocos Plate beneath the North American Plate ⓘ |
| timeZone | UTC−06:00 ⓘ |
| triggered | public concern about seismic risk in Mexico City ⓘ |
| type | interplate subduction earthquake ⓘ |
| year | 1957 ⓘ |
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: 1957 Mexico City earthquake Description of subject: The 1957 Mexico City earthquake was a powerful and destructive seismic event that struck Mexico City, causing significant damage to buildings and landmarks and resulting in numerous casualties.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Angel of Independence