Narmada basin and Son–Ganga basin
E272641
The Narmada basin and Son–Ganga basin are two major river drainage systems in central and northern India, respectively, whose waters are separated by the Amarkantak Plateau.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Narmada basin | 2 |
| Narmada basin and Son–Ganga basin canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2486733 — 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: Narmada basin and Son–Ganga basin Context triple: [Amarkantak Plateau, drainageDivideBetween, Narmada basin and Son–Ganga basin]
-
A.
Krishna River basin
The Krishna River basin is a major river drainage region in southern India that supports extensive agriculture, hydropower, and diverse ecosystems across several states.
-
B.
Raichur Doab
Raichur Doab is a fertile, historically significant region in southern India situated between the Krishna and Tungabhadra rivers, known for its rich agricultural land and numerous medieval forts and temples.
-
C.
Indus River basin
The Indus River basin is a vast drainage area in South Asia centered on the Indus River, supporting major agricultural regions and dense populations across parts of Pakistan, India, China, and Afghanistan.
-
D.
Dakshin Ganga
Dakshin Ganga is an honorific name for the Godavari River, revered as a sacred and major waterway of southern and central India akin to the Ganges in the north.
-
E.
Ganges-Brahmaputra-Meghna river system
The Ganges-Brahmaputra-Meghna river system is one of the world’s largest and most densely populated river basins, spanning the Himalayas to the Bay of Bengal and supporting hundreds of millions of people in South Asia.
- 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: Narmada basin and Son–Ganga basin Target entity description: The Narmada basin and Son–Ganga basin are two major river drainage systems in central and northern India, respectively, whose waters are separated by the Amarkantak Plateau.
-
A.
Krishna River basin
The Krishna River basin is a major river drainage region in southern India that supports extensive agriculture, hydropower, and diverse ecosystems across several states.
-
B.
Raichur Doab
Raichur Doab is a fertile, historically significant region in southern India situated between the Krishna and Tungabhadra rivers, known for its rich agricultural land and numerous medieval forts and temples.
-
C.
Indus River basin
The Indus River basin is a vast drainage area in South Asia centered on the Indus River, supporting major agricultural regions and dense populations across parts of Pakistan, India, China, and Afghanistan.
-
D.
Dakshin Ganga
Dakshin Ganga is an honorific name for the Godavari River, revered as a sacred and major waterway of southern and central India akin to the Ganges in the north.
-
E.
Ganges-Brahmaputra-Meghna river system
The Ganges-Brahmaputra-Meghna river system is one of the world’s largest and most densely populated river basins, spanning the Himalayas to the Bay of Bengal and supporting hundreds of millions of people in South Asia.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf | pair of river basins ⓘ |
| continent | Asia ⓘ |
| country | India ⓘ |
| drainageBasinType | fluvial basin system pair ⓘ |
| drainageDirectionContrast | westward-flowing Narmada system vs eastward-flowing Son–Ganga system ⓘ |
| drainageSystemType | river drainage system pair ⓘ |
| geomorphologicalBoundary | Amarkantak Plateau ⓘ |
| hasPart |
Narmada Valley
ⓘ
surface form:
Narmada basin
Ganges Basin ⓘ
surface form:
Son–Ganga basin
|
| hydrologicalFunction | separate catchment areas of Narmada and Son–Ganga systems ⓘ |
| hydrologicalRegion |
South Asia
ⓘ
surface form:
Indian subcontinent
|
| locatedIn |
central India
ⓘ
northern India ⓘ |
| physiographicSetting |
Amarkantak Plateau
ⓘ
surface form:
Amarkantak highland region
|
| relatedPlateau | Amarkantak Plateau ⓘ |
| relatedRiver |
Ganges
ⓘ
surface form:
Ganga River
Narmada ⓘ
surface form:
Narmada River
Son River ⓘ |
| separatedBy | Amarkantak Plateau ⓘ |
| separationDirection | east–west divide ⓘ |
| significance | major drainage divide in central India ⓘ |
| waterFlowSeparated |
Ganga River waters
ⓘ
Narmada River waters ⓘ Son River waters ⓘ |
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: Narmada basin and Son–Ganga basin Description of subject: The Narmada basin and Son–Ganga basin are two major river drainage systems in central and northern India, respectively, whose waters are separated by the Amarkantak Plateau.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Narmada basin
this entity surface form:
Narmada basin