Ogun River
E303739
Ogun River is a major river in southwestern Nigeria that flows southward through several states into the Lagos Lagoon, playing an important role in regional agriculture, transportation, and water supply.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Ogun River canonical | 6 |
| Ogun River basin | 3 |
| Ogun River Basin | 2 |
| Ogun River (regional proximity) | 1 |
| Ogun River system | 1 |
| Ogun River valley | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2852567 — 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: Ogun River Context triple: [Ogun State, namedAfter, Ogun River]
-
A.
Osun River
The Osun River is a sacred West African river in Nigeria revered in Yoruba religion and mythology, particularly associated with the goddess Oshun and the Osun-Osogbo Sacred Grove.
-
B.
Warri River
The Warri River is a significant waterway in southern Nigeria that flows through the city of Warri and supports regional transportation, fishing, and economic activities.
-
C.
Sokoto River
The Sokoto River is a significant waterway in northwestern Nigeria that drains a large part of the region’s savanna and supports agriculture, fishing, and local transport before joining the Niger River.
-
D.
Benue River
The Benue River is a major West African waterway and the largest tributary of the Niger River, flowing through Cameroon and Nigeria and serving as an important route for transport, agriculture, and fishing.
-
E.
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.
- 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: Ogun River Target entity description: Ogun River is a major river in southwestern Nigeria that flows southward through several states into the Lagos Lagoon, playing an important role in regional agriculture, transportation, and water supply.
-
A.
Osun River
The Osun River is a sacred West African river in Nigeria revered in Yoruba religion and mythology, particularly associated with the goddess Oshun and the Osun-Osogbo Sacred Grove.
-
B.
Warri River
The Warri River is a significant waterway in southern Nigeria that flows through the city of Warri and supports regional transportation, fishing, and economic activities.
-
C.
Sokoto River
The Sokoto River is a significant waterway in northwestern Nigeria that drains a large part of the region’s savanna and supports agriculture, fishing, and local transport before joining the Niger River.
-
D.
Benue River
The Benue River is a major West African waterway and the largest tributary of the Niger River, flowing through Cameroon and Nigeria and serving as an important route for transport, agriculture, and fishing.
-
E.
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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Nigeria ⓘ |
| continent | Africa ⓘ |
| country | Nigeria ⓘ |
| drainageBasin |
Lagos Lagoon system
ⓘ
linked to:
Lagos Lagoon
|
| ecosystemType | tropical river ecosystem ⓘ |
| environmentalIssue |
water pollution from agricultural runoff
ⓘ
water pollution from industrial effluents ⓘ water pollution from urban runoff ⓘ |
| flowDirection | southward ⓘ |
| flowsInto | Lagos Lagoon ⓘ |
| flowsThrough |
Lagos State
ⓘ
Ogun State ⓘ Oyo State ⓘ |
| hasCulturalSignificance | important in local Yoruba communities ⓘ |
| hasDam | Oyan River Dam ⓘ |
| hasEconomicRole |
supports farming communities
ⓘ
supports fishing communities ⓘ supports sand mining ⓘ |
| hasFloodplain |
Ogun River floodplain
ⓘ
linked to:
Ogun River region
|
| hasTributary |
Ofiki River
ⓘ
Oyan River ⓘ |
| importance | major river in southwestern Nigeria ⓘ |
| languageRegion | Yoruba-speaking areas ⓘ |
| locatedIn |
Southwestern Nigeria
ⓘ
linked to:
Western Nigeria
|
| mouthLocation | Lagos Lagoon ⓘ |
| nearCity |
Abeokuta
ⓘ
Ijebu Ode ⓘ
linked to:
Ijebu-Ode
Lagos ⓘ |
| partOf |
Ogun River Basin
ⓘ
linked to:
Ogun River
|
| region |
Yoruba region
ⓘ
linked to:
Yorubaland
|
| risk | flooding in adjacent communities ⓘ |
| sourceLocation | Oyo State ⓘ |
| supports |
regional agriculture
ⓘ
riverine transport ⓘ urban water supply ⓘ |
| usedFor |
agriculture
ⓘ
domestic water use ⓘ fishing ⓘ hydropower potential ⓘ industrial water use ⓘ irrigation ⓘ transportation ⓘ 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: Ogun River Description of subject: Ogun River is a major river in southwestern Nigeria that flows southward through several states into the Lagos Lagoon, playing an important role in regional agriculture, transportation, and water supply.
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ogun River
linked to: Ogun River
linked to: Ogun River
linked to: Ogun River
linked to: Ogun River
linked to: Ogun River
linked to: Ogun River
linked to: Ogun River