Ikopa River
E783188
The Ikopa River is a major waterway in Madagascar that flows through the capital city, Antananarivo, and plays a key role in the region’s agriculture and hydropower.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ikopa River canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5912191 — 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: Ikopa River Context triple: [Antananarivo, river, Ikopa River]
-
A.
Turakina River
Turakina River is a river in New Zealand’s North Island that flows through the Manawatū-Whanganui region to the South Taranaki Bight.
-
B.
Itaya River
The Itaya River is a tributary of the Amazon River in northeastern Peru that flows past the city of Iquitos and plays a key role in the region’s transportation and ecology.
-
C.
Pokshenga River
The Pokshenga River is a waterway in northern Russia that feeds into the larger Northern Dvina River system.
-
D.
Rispana River
Rispana River is a small but significant seasonal river flowing through Dehradun in Uttarakhand, India, that plays an important role in the city’s drainage and local ecology.
-
E.
Adycha River
The Adycha River is a significant river in northeastern Siberia, Russia, known for flowing through remote permafrost regions before joining the Yana River system.
- 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: Ikopa River Target entity description: The Ikopa River is a major waterway in Madagascar that flows through the capital city, Antananarivo, and plays a key role in the region’s agriculture and hydropower.
-
A.
Turakina River
Turakina River is a river in New Zealand’s North Island that flows through the Manawatū-Whanganui region to the South Taranaki Bight.
-
B.
Itaya River
The Itaya River is a tributary of the Amazon River in northeastern Peru that flows past the city of Iquitos and plays a key role in the region’s transportation and ecology.
-
C.
Pokshenga River
The Pokshenga River is a waterway in northern Russia that feeds into the larger Northern Dvina River system.
-
D.
Rispana River
Rispana River is a small but significant seasonal river flowing through Dehradun in Uttarakhand, India, that plays an important role in the city’s drainage and local ecology.
-
E.
Adycha River
The Adycha River is a significant river in northeastern Siberia, Russia, known for flowing through remote permafrost regions before joining the Yana River system.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| administrativeRegion |
Analamanga Region
ⓘ
Boeny Region ⓘ
linked to:
Boeny region
Bongolava Region ⓘ |
| associatedWith | flood risk in Antananarivo ⓘ |
| climateZone | tropical highland climate region ⓘ |
| continent | Africa ⓘ |
| country | Madagascar ⓘ |
| crossedBy | bridges in Antananarivo ⓘ |
| drainageBasin |
Betsiboka River basin
ⓘ
linked to:
Betsiboka River
|
| drainageType | exorheic ⓘ |
| environmentalIssue |
pollution from urban runoff
ⓘ
sedimentation ⓘ |
| flowsDirection | generally northwest toward the Betsiboka River ⓘ |
| flowsInto | Mozambique Channel ⓘ |
| flowsThrough | Antananarivo ⓘ |
| hasCapitalOnBanks | Antananarivo ⓘ |
| hasFloodplain | Ikopa River floodplain near Antananarivo ⓘ |
| hasHydropowerPlant |
Andekaleka hydropower plant
ⓘ
Antelomita hydropower plant ⓘ |
| hasValley | Ikopa valley ⓘ |
| importance |
key water source for Antananarivo region
ⓘ
major source of electricity for central Madagascar ⓘ |
| languageOfToponym | Malagasy ⓘ |
| locatedIn | central Madagascar ⓘ |
| majorRiverOf | Madagascar ⓘ |
| mouthCountry | Madagascar ⓘ |
| mouthLocation | Betsiboka River ⓘ |
| nearbyInfrastructure |
irrigation canals
ⓘ
rice paddies ⓘ |
| partOf | Madagascar river network ⓘ |
| passesNear |
Antananarivo metropolitan area
ⓘ
linked to:
Antananarivo
|
| passesThrough | Analamanga Region ⓘ |
| risk | seasonal flooding ⓘ |
| roleInEconomy |
supports commercial agriculture
ⓘ
supports subsistence farming ⓘ |
| sourceRegion |
central highlands of Madagascar
ⓘ
linked to:
Central Highlands of Madagascar
|
| supports |
fishing activities
ⓘ
riparian agriculture ⓘ |
| tributaryOf | Betsiboka River ⓘ |
| usedFor |
agriculture
ⓘ
hydropower generation ⓘ irrigation ⓘ rice cultivation ⓘ |
| waterUse |
domestic water supply
ⓘ
industrial water supply ⓘ |
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: Ikopa River Description of subject: The Ikopa River is a major waterway in Madagascar that flows through the capital city, Antananarivo, and plays a key role in the region’s agriculture and hydropower.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.