Sanaga River
E161028
The Sanaga River is the longest river in Cameroon, flowing from the central highlands to the Atlantic Ocean and serving as a major source of hydroelectric power and water resources for the country.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Sanaga River canonical | 20 |
| Sanaga River basin | 1 |
| Sanaga River system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1128833 — 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: Sanaga River Context triple: [Cameroon, river, Sanaga River]
-
A.
Logone River
The Logone River is a significant Central African waterway that forms part of the border between Chad and Cameroon before joining the Chari River near Lake Chad.
-
B.
Niger River
The Niger River is a major West African river that flows in a great arc through countries including Guinea, Mali, Niger, and Nigeria before emptying into the Atlantic Ocean.
-
C.
Gongola River
The Gongola River is a major river in northeastern Nigeria that flows through the savanna region before joining the Benue River.
-
D.
Senegal River
The Senegal River is a major West African waterway that flows through Guinea, Mali, Mauritania, and Senegal before emptying into the Atlantic Ocean, serving as an important source of irrigation, transport, and hydroelectric power.
-
E.
Ogooué River
The Ogooué River is the principal waterway of Gabon, flowing across the country to the Atlantic Ocean and serving as a vital ecological and transportation corridor in Central Africa.
- 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: Sanaga River Target entity description: The Sanaga River is the longest river in Cameroon, flowing from the central highlands to the Atlantic Ocean and serving as a major source of hydroelectric power and water resources for the country.
-
A.
Logone River
The Logone River is a significant Central African waterway that forms part of the border between Chad and Cameroon before joining the Chari River near Lake Chad.
-
B.
Niger River
The Niger River is a major West African river that flows in a great arc through countries including Guinea, Mali, Niger, and Nigeria before emptying into the Atlantic Ocean.
-
C.
Gongola River
The Gongola River is a major river in northeastern Nigeria that flows through the savanna region before joining the Benue River.
-
D.
Senegal River
The Senegal River is a major West African waterway that flows through Guinea, Mali, Mauritania, and Senegal before emptying into the Atlantic Ocean, serving as an important source of irrigation, transport, and hydroelectric power.
-
E.
Ogooué River
The Ogooué River is the principal waterway of Gabon, flowing across the country to the Atlantic Ocean and serving as a vital ecological and transportation corridor in Central Africa.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Cameroon ⓘ |
| climateZone | tropical monsoon and equatorial influences ⓘ |
| continent | Africa ⓘ |
| country | Cameroon ⓘ |
| dischargeLocation | Gulf of Guinea ⓘ |
| drainageArea | one of the largest river basins in Cameroon ⓘ |
| drainageBasin | Sanaga River basin ⓘ |
| economicActivity |
fishing
ⓘ
transport (locally and historically) ⓘ |
| ecosystemType | tropical river ⓘ |
| floodRegime | subject to seasonal flooding ⓘ |
| flowsDirection | generally from east to west ⓘ |
| flowsInto | Atlantic Ocean ⓘ |
| flowsThrough |
Centre Region of Cameroon
ⓘ
linked to:
Central Region of Cameroon
Littoral Region of Cameroon ⓘ |
| hasBridge | road and rail bridges near Edea ⓘ |
| hasHydroelectricDam |
Edea Dam
ⓘ
Song Loulou Dam ⓘ |
| hasHydroelectricProject | Nachtigal Hydropower Project ⓘ |
| hasRapids | yes ⓘ |
| hasTributary |
Djerem River
ⓘ
Lom River ⓘ Mbam River ⓘ
linked to:
Nkam River
Nyong River (historically connected via wetlands) ⓘ |
| hasWildlife | freshwater fish species ⓘ |
| importance |
key water resource for central Cameroon
ⓘ
major source of electricity for Cameroon ⓘ |
| isLongestRiverOf | Cameroon ⓘ |
| length | approximately 918 km ⓘ |
| locatedIn | Cameroon ⓘ |
| majorUse |
hydroelectric power generation
ⓘ
irrigation ⓘ water supply ⓘ |
| mouth | Atlantic Ocean ⓘ |
| nationalSignificance |
important for regional development in central and littoral Cameroon
ⓘ
strategic for Cameroon’s energy policy ⓘ |
| nearbyCity |
Douala (regionally nearby to lower course)
ⓘ
linked to:
Port of Douala
|
| passesNear |
Edea
ⓘ
Nachtigal Falls ⓘ Song Loulou ⓘ |
| roleInEnergySector | backbone of Cameroon hydropower potential ⓘ |
| sourceRegion |
central highlands of Cameroon
ⓘ
linked to:
Cameroon Highlands
|
| watercourseType | perennial river ⓘ |
| waterManagement | regulated by dams and reservoirs ⓘ |
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: Sanaga River Description of subject: The Sanaga River is the longest river in Cameroon, flowing from the central highlands to the Atlantic Ocean and serving as a major source of hydroelectric power and water resources for the country.
Referenced by (22)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sanaga River
subject linked to:
Song Loulou
subject linked to:
Nachtigal Falls
linked to: Sanaga River
subject linked to:
Cameroon (as part of its successor Cross River State)