Vaigai River basin
E671266
The Vaigai River basin is a river catchment area in southern India that collects and channels rainfall from surrounding highlands, including the Cardamom Hills, into the Vaigai River system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Vaigai River basin canonical | 4 |
| Noyyal River basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7525310 — 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: Vaigai River basin Context triple: [Cardamom Hills, drainageTo, Vaigai River basin]
-
A.
Kei River basin
The Kei River basin is a major river catchment area in South Africa’s Eastern Cape, encompassing diverse landscapes from the Amathole Mountains to the Indian Ocean and supporting agriculture, settlements, and natural ecosystems.
-
B.
Rega River basin
The Rega River basin is the drainage area of the Rega River in northwestern Poland, encompassing the river’s tributaries, surrounding landscapes, and towns such as Schievelbein (Świdwin).
-
C.
Lempa River basin
The Lempa River basin is a major Central American watershed, primarily in El Salvador, that drains a large region into the Pacific Ocean and supports significant agriculture, hydropower, and urban populations.
-
D.
Homathko River basin
The Homathko River basin is a remote watershed in the Coast Mountains of British Columbia that channels glacial meltwater and mountain runoff from high icefields and peaks to the Pacific Ocean via Bute Inlet.
-
E.
Isel River basin
The Isel River basin is a mountainous watershed in the Eastern Alps that collects glacial meltwater and runoff from surrounding ranges, including the Glockner Group, before feeding into larger river systems.
- 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: Vaigai River basin Target entity description: The Vaigai River basin is a river catchment area in southern India that collects and channels rainfall from surrounding highlands, including the Cardamom Hills, into the Vaigai River system.
-
A.
Kei River basin
The Kei River basin is a major river catchment area in South Africa’s Eastern Cape, encompassing diverse landscapes from the Amathole Mountains to the Indian Ocean and supporting agriculture, settlements, and natural ecosystems.
-
B.
Rega River basin
The Rega River basin is the drainage area of the Rega River in northwestern Poland, encompassing the river’s tributaries, surrounding landscapes, and towns such as Schievelbein (Świdwin).
-
C.
Lempa River basin
The Lempa River basin is a major Central American watershed, primarily in El Salvador, that drains a large region into the Pacific Ocean and supports significant agriculture, hydropower, and urban populations.
-
D.
Homathko River basin
The Homathko River basin is a remote watershed in the Coast Mountains of British Columbia that channels glacial meltwater and mountain runoff from high icefields and peaks to the Pacific Ocean via Bute Inlet.
-
E.
Isel River basin
The Isel River basin is a mountainous watershed in the Eastern Alps that collects glacial meltwater and runoff from surrounding ranges, including the Glockner Group, before feeding into larger river systems.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
drainage basin
ⓘ
river basin ⓘ river catchment area ⓘ |
| associatedWith |
Vaigai River system
ⓘ
linked to:
Vaigai River
|
| climate | tropical monsoon climate zone ⓘ |
| collectsRainfallFrom |
Cardamom Hills
ⓘ
surrounding highlands ⓘ |
| collectsRunoffFrom | Cardamom Hills ⓘ |
| country | India ⓘ |
| drainagePattern | east-flowing river system ⓘ |
| drainsInto | Vaigai River ⓘ |
| feeds | Vaigai irrigation systems ⓘ |
| geomorphology | hill and plain system ⓘ |
| hasWatershed | Vaigai watershed ⓘ |
| hydrologicalSystem |
Vaigai River system
ⓘ
linked to:
Vaigai River
|
| locatedIn |
Peninsular India
ⓘ
Tamil Nadu ⓘ southern India ⓘ
linked to:
South India
|
| partOf |
Indian river basins
ⓘ
Tamil Nadu river basins ⓘ |
| primaryRiver | Vaigai River ⓘ |
| receivesRainfallFrom |
Northeast monsoon
ⓘ
Southwest monsoon ⓘ |
| region | South India ⓘ |
| sourceRegionOfRunoff | Cardamom Hills ⓘ |
| supports |
irrigated agriculture
ⓘ
rural settlements ⓘ urban settlements ⓘ |
| waterResourceFor |
Madurai region
ⓘ
linked to:
Madurai district
Tamil Nadu ⓘ |
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: Vaigai River basin Description of subject: The Vaigai River basin is a river catchment area in southern India that collects and channels rainfall from surrounding highlands, including the Cardamom Hills, into the Vaigai River system.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.