Sunda Trench
E52384
The Sunda Trench is a deep oceanic trench in the eastern Indian Ocean off the coasts of Sumatra and Java, formed by the subduction of the Indo-Australian Plate beneath the Eurasian Plate.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Sunda Trench canonical | 15 |
| Sumatra Trench | 2 |
| Java–Sunda Trench | 1 |
| Sunda subduction zone | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T371842 — 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: Sunda Trench Context triple: [Indian Ocean, hasDeepestPoint, Sunda Trench]
-
A.
Manila Trench
The Manila Trench is a deep oceanic trench in the western Pacific, off the coast of Luzon in the Philippines, formed by the subduction of the Eurasian Plate beneath the Philippine Sea Plate.
-
B.
Philippine Trench
The Philippine Trench is a deep oceanic trench in the western Pacific, known as one of the deepest points on Earth’s seafloor and a major site of tectonic subduction.
-
C.
Tonga Trench
The Tonga Trench is one of the deepest oceanic trenches on Earth, located in the southwestern Pacific and formed by the subduction of the Pacific Plate beneath the Indo-Australian Plate.
-
D.
Izu–Ogasawara Trench
The Izu–Ogasawara Trench is a deep oceanic trench in the western Pacific formed by the subduction of the Pacific Plate beneath the Philippine Sea Plate, contributing to intense seismic and volcanic activity in the region.
-
E.
Aleutian Trench
The Aleutian Trench is a deep oceanic trench in the North Pacific where the Pacific Plate subducts beneath the North American Plate, forming part of a major seismically active subduction zone.
- 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: Sunda Trench Target entity description: The Sunda Trench is a deep oceanic trench in the eastern Indian Ocean off the coasts of Sumatra and Java, formed by the subduction of the Indo-Australian Plate beneath the Eurasian Plate.
-
A.
Manila Trench
The Manila Trench is a deep oceanic trench in the western Pacific, off the coast of Luzon in the Philippines, formed by the subduction of the Eurasian Plate beneath the Philippine Sea Plate.
-
B.
Philippine Trench
The Philippine Trench is a deep oceanic trench in the western Pacific, known as one of the deepest points on Earth’s seafloor and a major site of tectonic subduction.
-
C.
Tonga Trench
The Tonga Trench is one of the deepest oceanic trenches on Earth, located in the southwestern Pacific and formed by the subduction of the Pacific Plate beneath the Indo-Australian Plate.
-
D.
Izu–Ogasawara Trench
The Izu–Ogasawara Trench is a deep oceanic trench in the western Pacific formed by the subduction of the Pacific Plate beneath the Philippine Sea Plate, contributing to intense seismic and volcanic activity in the region.
-
E.
Aleutian Trench
The Aleutian Trench is a deep oceanic trench in the North Pacific where the Pacific Plate subducts beneath the North American Plate, forming part of a major seismically active subduction zone.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
oceanic trench
ⓘ
subduction zone ⓘ |
| alsoKnownAs | Java Trench ⓘ |
| associatedWith |
megathrust earthquakes
ⓘ
tsunamis ⓘ volcanic activity in the Sunda Arc ⓘ |
| bathymetry | steep-sided trench ⓘ |
| causeOf | large tsunamigenic earthquakes off Sumatra ⓘ |
| countryBorder | Indonesia ⓘ |
| crustTypeOverriding | continental crust of Sundaland margin ⓘ |
| crustTypeSubducting | oceanic crust ⓘ |
| extendsFrom | off the coast of Sumatra ⓘ |
| extendsTo | south of Java ⓘ |
| formedBy | subduction of the Indo-Australian Plate beneath the Eurasian Plate ⓘ |
| geodynamicProcess | oceanic lithosphere subduction ⓘ |
| geologicalAge | Cenozoic plate boundary structure ⓘ |
| geologicalHazardZoneFor | Indonesia ⓘ |
| governingCountryExclusiveEconomicZone | Indonesia ⓘ |
| hazardType |
seismic hazard zone
ⓘ
tsunami hazard zone ⓘ |
| importance | major plate boundary between Indo-Australian and Eurasian Plates ⓘ |
| linkedToEvent |
2004 Indian Ocean earthquake and tsunami region
ⓘ
2010 Mentawai earthquake region ⓘ |
| locatedIn | eastern Indian Ocean ⓘ |
| locatedOffCoastOf |
Java
ⓘ
Sumatra ⓘ |
| marginType | active continental margin ⓘ |
| maximumDepth |
over 23,000 feet
ⓘ
over 7,000 metres ⓘ |
| nearbyIslandArc | Sunda Arc ⓘ |
| nearbyMajorIsland |
Java
ⓘ
Sumatra ⓘ |
| nearbySea |
Andaman Sea
ⓘ
Java Sea ⓘ |
| ocean | Indian Ocean ⓘ |
| orientation | northwest–southeast ⓘ |
| overridingPlate | Eurasian Plate ⓘ |
| partOf |
Alpide Belt
ⓘ
linked to:
Alpine-Himalayan orogenic belt
Sunda Arc ⓘ |
| physiographicProvince |
Indian Ocean basin
ⓘ
linked to:
Indian Ocean
|
| plateSubducting | Indo-Australian Plate ⓘ |
| region | Southeast Asia ⓘ |
| relatedEarthquakeZone |
Sunda megathrust
ⓘ
linked to:
Sunda subduction system
|
| relativeDepthRank | one of the deepest parts of the Indian Ocean ⓘ |
| seafloorFeatureType | deep-sea trench ⓘ |
| sedimentSource | erosion from Sumatra and Java ⓘ |
| studiedIn |
marine geology
ⓘ
plate tectonics ⓘ |
| tectonicSetting | convergent plate boundary ⓘ |
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: Sunda Trench Description of subject: The Sunda Trench is a deep oceanic trench in the eastern Indian Ocean off the coasts of Sumatra and Java, formed by the subduction of the Indo-Australian Plate beneath the Eurasian Plate.
Referenced by (19)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sunda Trench
linked to: Sunda Trench
linked to: Sunda Trench
linked to: Sunda Trench