1990 Luzon earthquake
E821347
The 1990 Luzon earthquake was a powerful magnitude 7.7 quake that struck northern Luzon in the Philippines, causing widespread destruction and thousands of deaths.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1990 Luzon earthquake canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9795967 — 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: 1990 Luzon earthquake Context triple: [Philippine Fault System, notableEarthquake, 1990 Luzon earthquake]
-
A.
1967 Mudurnu Valley earthquake
The 1967 Mudurnu Valley earthquake was a major and destructive seismic event in northwestern Turkey that ruptured a segment of the North Anatolian Fault, causing significant damage and casualties.
-
B.
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.
-
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.
1707 Hoei earthquake
The 1707 Hoei earthquake was a massive megathrust earthquake off southwestern Japan that triggered widespread destruction and a large tsunami, and is one of the most powerful earthquakes in Japanese history.
-
E.
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.
- 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: 1990 Luzon earthquake Target entity description: The 1990 Luzon earthquake was a powerful magnitude 7.7 quake that struck northern Luzon in the Philippines, causing widespread destruction and thousands of deaths.
-
A.
1967 Mudurnu Valley earthquake
The 1967 Mudurnu Valley earthquake was a major and destructive seismic event in northwestern Turkey that ruptured a segment of the North Anatolian Fault, causing significant damage and casualties.
-
B.
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.
-
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.
1707 Hoei earthquake
The 1707 Hoei earthquake was a massive megathrust earthquake off southwestern Japan that triggered widespread destruction and a large tsunami, and is one of the most powerful earthquakes in Japanese history.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf | earthquake ⓘ |
| affectedRegion |
Cagayan Valley
NERFINISHED
ⓘ
Central Luzon NERFINISHED ⓘ Cordillera Administrative Region NERFINISHED ⓘ Ilocos Region NERFINISHED ⓘ Metro Manila NERFINISHED ⓘ |
| aftershocks | thousands of aftershocks ⓘ |
| alsoKnownAs |
1990 Baguio earthquake
NERFINISHED
ⓘ
1990 Northern Luzon earthquake NERFINISHED ⓘ |
| casualties | about 1600 deaths ⓘ |
| continent | Asia ⓘ |
| country | Philippines ⓘ |
| damageCost | over US$300 million ⓘ |
| date | 1990-07-16 ⓘ |
| day | 16 ⓘ |
| depth | 25 km ⓘ |
| displacedPeople | hundreds of thousands displaced ⓘ |
| epicenter | Rizal, Nueva Ecija NERFINISHED ⓘ |
| faultSystem | Philippine Fault System NERFINISHED ⓘ |
| governmentResponse | large-scale rescue and relief operations ⓘ |
| impact |
disruption of transportation and communication
ⓘ
severe damage to infrastructure and buildings ⓘ widespread destruction in northern Luzon ⓘ |
| injuries | more than 3000 people injured ⓘ |
| intensityScale | Modified Mercalli intensity scale NERFINISHED ⓘ |
| localTime | 16:26 PST ⓘ |
| location |
Luzon
NERFINISHED
ⓘ
northern Luzon ⓘ |
| longTermEffect |
increased public awareness of earthquake preparedness
ⓘ
revisions to Philippine building codes ⓘ |
| magnitude | 7.7 ⓘ |
| magnitudeScale | moment magnitude scale ⓘ |
| maximumIntensity | IX (Violent) ⓘ |
| month | July ⓘ |
| notableCityAffected |
Baguio
NERFINISHED
ⓘ
Cabanatuan NERFINISHED ⓘ Dagupan NERFINISHED ⓘ |
| notableStructureCollapsed |
Christian College of the Philippines building in Cabanatuan
GENERATED
ⓘ
Hyatt Terraces Plaza Hotel in Baguio GENERATED ⓘ |
| partOf | history of earthquakes in the Philippines ⓘ |
| plateInteraction | Philippine Sea Plate–Eurasian Plate NERFINISHED ⓘ |
| tectonicSetting | convergent plate boundary ⓘ |
| timeZone | Philippine Standard Time ⓘ |
| triggeredEvent |
building collapses
ⓘ
ground ruptures ⓘ landslides ⓘ liquefaction ⓘ |
| type | strike-slip earthquake ⓘ |
| year | 1990 ⓘ |
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: 1990 Luzon earthquake Description of subject: The 1990 Luzon earthquake was a powerful magnitude 7.7 quake that struck northern Luzon in the Philippines, causing widespread destruction and thousands of deaths.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.