Mount Pinatubo
E101545
Mount Pinatubo is an active stratovolcano in the Philippines best known for its cataclysmic 1991 eruption, one of the largest of the 20th century.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Mount Pinatubo canonical | 17 |
| 1991 Mount Pinatubo eruption | 1 |
| 1991 eruption of Mount Pinatubo | 1 |
| Mount Pinatubo caldera | 1 |
| Mount Pinatubo eruption of 1991 | 1 |
| Pinatubo | 1 |
| Pinatubo caldera | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T800896 — 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: Mount Pinatubo Context triple: [Luzon, hasVolcano, Mount Pinatubo]
-
A.
Taal Volcano
Taal Volcano is an active and historically explosive volcano in the Philippines, famous for its picturesque crater lake setting on the island of Luzon.
-
B.
Mayon Volcano
Mayon Volcano is an active stratovolcano in the Philippines famed for its near-perfect conical shape and frequent eruptions.
-
C.
Maderas Volcano
Maderas Volcano is a dormant stratovolcano on Ometepe Island in southwestern Nicaragua, known for its cloud forest, crater lake, and rich biodiversity.
-
D.
Mount Tambora
Mount Tambora is a massive stratovolcano on the Indonesian island of Sumbawa, best known for its cataclysmic 1815 eruption that caused global climatic effects and the "Year Without a Summer."
-
E.
Mount Merapi
Mount Merapi is one of Indonesia’s most active and dangerous stratovolcanoes, located on the island of Java near the city of Yogyakarta.
- 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: Mount Pinatubo Target entity description: Mount Pinatubo is an active stratovolcano in the Philippines best known for its cataclysmic 1991 eruption, one of the largest of the 20th century.
-
A.
Taal Volcano
Taal Volcano is an active and historically explosive volcano in the Philippines, famous for its picturesque crater lake setting on the island of Luzon.
-
B.
Mayon Volcano
Mayon Volcano is an active stratovolcano in the Philippines famed for its near-perfect conical shape and frequent eruptions.
-
C.
Maderas Volcano
Maderas Volcano is a dormant stratovolcano on Ometepe Island in southwestern Nicaragua, known for its cloud forest, crater lake, and rich biodiversity.
-
D.
Mount Tambora
Mount Tambora is a massive stratovolcano on the Indonesian island of Sumbawa, best known for its cataclysmic 1815 eruption that caused global climatic effects and the "Year Without a Summer."
-
E.
Mount Merapi
Mount Merapi is one of Indonesia’s most active and dangerous stratovolcanoes, located on the island of Java near the city of Yogyakarta.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
active volcano
ⓘ
stratovolcano ⓘ |
| affectedPopulation | hundreds of thousands of people displaced in 1991 ⓘ |
| ashDistribution | ash dispersed over much of Southeast Asia in 1991 ⓘ |
| ashPlumeHeight | over 30 kilometers in 1991 eruption ⓘ |
| climateEffect | lowered global temperatures by about 0.4–0.5 °C for a few years ⓘ |
| country | Philippines ⓘ |
| craterLakeName | Lake Pinatubo ⓘ |
| createdCaldera |
Pinatubo caldera
ⓘ
linked to:
Mount Pinatubo
|
| elevation |
1486 meters
ⓘ
4875 feet ⓘ |
| eruptionCentury | 20th century ⓘ |
| eruptionDeaths | over 800 people killed in 1991 eruption ⓘ |
| eruptionStart | June 1991 ⓘ |
| eruptionStyle | Plinian ⓘ |
| eruptionVEI | VEI 6 ⓘ |
| geologicAge | Quaternary ⓘ |
| globalImpact | caused measurable global cooling ⓘ |
| hasFeature | crater lake ⓘ |
| hazardType |
ashfall
ⓘ
lahars ⓘ pyroclastic flows ⓘ |
| indigenousPeople | Aeta ⓘ |
| isPartOf | Pacific Ring of Fire ⓘ |
| knownFor |
cataclysmic 1991 eruption
ⓘ
one of the largest eruptions of the 20th century ⓘ |
| lastEruption | 1991 ⓘ |
| locatedIn |
Luzon
ⓘ
Zambales Mountains ⓘ |
| majorEruption | June 15, 1991 ⓘ |
| monitoredBy |
Philippine Institute of Volcanology and Seismology
ⓘ
United States Geological Survey during 1991 crisis ⓘ |
| nearbyCity |
Angeles City
ⓘ
Olongapo ⓘ
linked to:
Olongapo, Philippines
|
| nearbyUSBase |
Clark Air Base
ⓘ
Subic Bay Naval Base ⓘ
linked to:
Subic Bay
|
| post1991Elevation | about 1486 meters ⓘ |
| postEruptionUse |
tourist destination
ⓘ
trekking site ⓘ |
| pre1991Elevation | about 1745 meters ⓘ |
| precursorActivity | phreatic explosions in April 1991 ⓘ |
| province |
Pampanga
ⓘ
Tarlac ⓘ Zambales ⓘ |
| sulfurDioxideEmission | about 20 million tons in 1991 eruption ⓘ |
| tectonicSetting | subduction of the Eurasian Plate beneath the Philippine Sea Plate ⓘ |
| UNLOCODE | PH PIN (approximate region association) ⓘ |
| volcanicArc | Luzon Volcanic Arc ⓘ |
| volcanoType | andesitic-dacitic stratovolcano ⓘ |
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: Mount Pinatubo Description of subject: Mount Pinatubo is an active stratovolcano in the Philippines best known for its cataclysmic 1991 eruption, one of the largest of the 20th century.
Referenced by (23)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mount Pinatubo
subject linked to:
Clark Air Base, Philippines
linked to: Mount Pinatubo
linked to: Mount Pinatubo
linked to: Mount Pinatubo
subject linked to:
Filipina
linked to: Mount Pinatubo
linked to: Mount Pinatubo