1986 San Salvador earthquake
E88857
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 1986 El Salvador earthquake | 1 |
| 1986 San Salvador earthquake canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T745943 — 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: 1986 San Salvador earthquake Context triple: [San Salvador, notableEvent, 1986 San Salvador earthquake]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
El Mozote massacre
The El Mozote massacre was a 1981 atrocity in which Salvadoran government troops killed hundreds of civilians, becoming one of the most infamous human rights violations of the Salvadoran Civil War.
-
E.
1992 Cape Mendocino earthquakes
The 1992 Cape Mendocino earthquakes were a sequence of powerful offshore quakes near Northern California that caused significant shaking, damage, and a small tsunami along the Pacific coast.
- 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: 1986 San Salvador earthquake Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
El Mozote massacre
The El Mozote massacre was a 1981 atrocity in which Salvadoran government troops killed hundreds of civilians, becoming one of the most infamous human rights violations of the Salvadoran Civil War.
-
E.
1992 Cape Mendocino earthquakes
The 1992 Cape Mendocino earthquakes were a sequence of powerful offshore quakes near Northern California that caused significant shaking, damage, and a small tsunami along the Pacific coast.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
earthquake
ⓘ
natural disaster ⓘ |
| affectedArea |
San Salvador Department
ⓘ
San Salvador ⓘ
surface form:
San Salvador metropolitan area
|
| aftershocks | numerous aftershocks in following days ⓘ |
| alsoKnownAs |
1986 San Salvador earthquake
ⓘ
surface form:
1986 El Salvador earthquake
|
| capitalAffected | San Salvador ⓘ |
| casualties | at least 1000 deaths ⓘ |
| country | El Salvador ⓘ |
| damage | widespread structural damage in San Salvador ⓘ |
| date | 1986-10-10 ⓘ |
| day | 10 ⓘ |
| depth | 10 km ⓘ |
| economicLoss | hundreds of millions of US dollars ⓘ |
| epicenter | San Salvador ⓘ |
| faultType | strike-slip fault ⓘ |
| governmentResponse | national state of emergency declared ⓘ |
| homeless | tens of thousands homeless ⓘ |
| humanImpact | psychological trauma among survivors ⓘ |
| impact |
disruption of water and power services
ⓘ
severe damage to health infrastructure ⓘ severe damage to housing stock ⓘ |
| injuries | several thousand injured ⓘ |
| intensityScale | Modified Mercalli intensity scale ⓘ |
| internationalAid | received international humanitarian assistance ⓘ |
| ledTo |
revisions of El Salvador building codes
ⓘ
urban planning reforms in San Salvador ⓘ |
| localTime | 11:49 ⓘ |
| longTermEffect |
increased awareness of seismic risk in El Salvador
ⓘ
strengthening of civil protection systems in El Salvador ⓘ |
| magnitude | 5.7 ⓘ |
| magnitudeScale | moment magnitude scale ⓘ |
| maximumIntensity | IX ⓘ |
| month | October ⓘ |
| notableBuildingCollapse |
Hospital Benjamin Bloom
ⓘ
multistory apartment buildings in San Salvador ⓘ |
| plateBoundary |
Cocos–Caribbean plate boundary
ⓘ
surface form:
Cocos Plate–Caribbean Plate boundary
|
| recordedBy | seismological networks worldwide ⓘ |
| region | Central America ⓘ |
| tectonicSetting |
Central American Volcanic Arc
ⓘ
surface form:
Central America volcanic arc
|
| timeZone | CST ⓘ |
| triggered |
ground fissures
ⓘ
landslides ⓘ |
| type | shallow crustal earthquake ⓘ |
| year | 1986 ⓘ |
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: 1986 San Salvador earthquake Description of subject: 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.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
1986 El Salvador earthquake