Anambra River
E584065
The Anambra River is a major river in southeastern Nigeria that serves as an important tributary of the Niger River and a key geographical feature of the region.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Anambra River canonical | 4 |
| Anambra River basin | 1 |
| Obibia River | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6297053 — 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: Anambra River Context triple: [Anambra State, namedAfter, Anambra River]
-
A.
Kaduna River
The Kaduna River is a major tributary of the Niger River in central Nigeria, flowing through Kaduna State and serving as an important water source for agriculture, fishing, and local communities.
-
B.
Kalu River
The Kalu River is one of Sri Lanka’s major rivers, flowing southwest from the island’s central highlands to the Indian Ocean and playing a key role in regional agriculture, ecology, and flood control.
-
C.
Katsina Ala River
The Katsina Ala River is a significant waterway in Nigeria that flows through Benue State and supports local agriculture, fishing, and transportation before joining the Benue River.
-
D.
Aba River
The Aba River is a waterway in southeastern Nigeria that flows through the city of Aba and serves as an important local natural and economic resource.
-
E.
Yobe River
The Yobe River is a major West African river that flows through Nigeria and Niger, forming part of their border and supporting agriculture and communities in the semi-arid Sahel region.
- 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: Anambra River Target entity description: The Anambra River is a major river in southeastern Nigeria that serves as an important tributary of the Niger River and a key geographical feature of the region.
-
A.
Kaduna River
The Kaduna River is a major tributary of the Niger River in central Nigeria, flowing through Kaduna State and serving as an important water source for agriculture, fishing, and local communities.
-
B.
Kalu River
The Kalu River is one of Sri Lanka’s major rivers, flowing southwest from the island’s central highlands to the Indian Ocean and playing a key role in regional agriculture, ecology, and flood control.
-
C.
Katsina Ala River
The Katsina Ala River is a significant waterway in Nigeria that flows through Benue State and supports local agriculture, fishing, and transportation before joining the Benue River.
-
D.
Aba River
The Aba River is a waterway in southeastern Nigeria that flows through the city of Aba and serves as an important local natural and economic resource.
-
E.
Yobe River
The Yobe River is a major West African river that flows through Nigeria and Niger, forming part of their border and supporting agriculture and communities in the semi-arid Sahel region.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| alsoKnownAs | Omambala River ⓘ |
| basinCountry | Nigeria ⓘ |
| contributesTo | Niger River discharge ⓘ |
| country | Nigeria ⓘ |
| drainageAreaOf |
parts of Anambra State
ⓘ
parts of Enugu State ⓘ parts of Kogi State ⓘ |
| flowsThrough |
Anambra State
ⓘ
Enugu State ⓘ Kogi State ⓘ |
| geographicalFeatureOf | Anambra Basin ⓘ |
| hasEcologicalRole |
supports riparian vegetation in southeastern Nigeria
ⓘ
supports wetlands along its course ⓘ |
| hasFloodplain | Anambra River floodplain ⓘ |
| importantFor |
agricultural activities along its banks
ⓘ
local fisheries ⓘ regional transportation network ⓘ |
| influences | floodplain agriculture in Anambra Valley ⓘ |
| locatedIn | southeastern Nigeria ⓘ |
| majorTributaryOf |
Lower Niger River
ⓘ
linked to:
Niger River
|
| mouthLocatedIn | Niger River ⓘ |
| mouthNear | Onitsha ⓘ |
| namedAfter | Anambra State ⓘ |
| near |
Aguleri
ⓘ
Nsugbe ⓘ Ogbaru area ⓘ Otuocha ⓘ |
| partOf |
Niger River basin
ⓘ
linked to:
Niger River valley
|
| region |
South East Nigeria
ⓘ
linked to:
Southeastern Nigeria
|
| sourceRegion |
Areas near the Udi highlands
ⓘ
Northern part of Anambra State ⓘ |
| tributaryOf | Niger River ⓘ |
| usedFor |
fishing
ⓘ
irrigation ⓘ local transportation ⓘ |
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: Anambra River Description of subject: The Anambra River is a major river in southeastern Nigeria that serves as an important tributary of the Niger River and a key geographical feature of the region.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Anambra River