Cahora Bassa Dam
E70573
Cahora Bassa Dam is a major hydroelectric dam in Mozambique that forms one of Africa’s largest artificial lakes and supplies significant power to the region.
All labels observed (9)
How this entity was disambiguated
This entity first appeared as the object of triple T536176 — 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: Cahora Bassa Dam Context triple: [Zambezi River, hasDam, Cahora Bassa Dam]
-
A.
Cahora Bassa Gorge
Cahora Bassa Gorge is a steep, narrow section of the Zambezi River in Mozambique, known for its dramatic scenery and the nearby Cahora Bassa Dam and reservoir.
-
B.
Gariep Dam
Gariep Dam is South Africa’s largest storage reservoir, situated on the Orange River and serving as a key source of water, hydroelectric power, and recreation for the surrounding regions.
-
C.
Almatti Dam
Almatti Dam is a major hydroelectric and irrigation dam in Karnataka, India, built across the Krishna River as part of the Upper Krishna Project.
-
D.
Eder Dam
Eder Dam is a major German gravity dam in the Eder River valley, historically known for being one of the dams breached by the RAF’s “Dambusters” raid during World War II.
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E.
Kariba Gorge
Kariba Gorge is a steep, narrow canyon on the Zambezi River best known as the site of the Kariba Dam and Lake Kariba on the border between Zambia and Zimbabwe.
- 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: Cahora Bassa Dam Target entity description: Cahora Bassa Dam is a major hydroelectric dam in Mozambique that forms one of Africa’s largest artificial lakes and supplies significant power to the region.
-
A.
Cahora Bassa Gorge
Cahora Bassa Gorge is a steep, narrow section of the Zambezi River in Mozambique, known for its dramatic scenery and the nearby Cahora Bassa Dam and reservoir.
-
B.
Gariep Dam
Gariep Dam is South Africa’s largest storage reservoir, situated on the Orange River and serving as a key source of water, hydroelectric power, and recreation for the surrounding regions.
-
C.
Almatti Dam
Almatti Dam is a major hydroelectric and irrigation dam in Karnataka, India, built across the Krishna River as part of the Upper Krishna Project.
-
D.
Eder Dam
Eder Dam is a major German gravity dam in the Eder River valley, historically known for being one of the dams breached by the RAF’s “Dambusters” raid during World War II.
-
E.
Kariba Gorge
Kariba Gorge is a steep, narrow canyon on the Zambezi River best known as the site of the Kariba Dam and Lake Kariba on the border between Zambia and Zimbabwe.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
artificial lake
ⓘ
electric power company ⓘ gravity dam ⓘ hydroelectric dam ⓘ reservoir ⓘ |
| associatedWith | Portuguese colonial infrastructure projects ⓘ |
| constructionStartDate | 1969 ⓘ |
| continent | Africa ⓘ |
| country | Mozambique ⓘ |
| countryDuringConstruction |
Mozambique
ⓘ
surface form:
Portuguese Mozambique
|
| energySource | hydropower ⓘ |
| formsReservoir |
Cahora Bassa Dam
self-linksurface differs
ⓘ
surface form:
Lake Cahora Bassa
|
| hasImpactOn | regional power grid ⓘ |
| hasSpillway | yes ⓘ |
| height | approximately 171 m ⓘ |
| installedCapacity | about 2075 MW ⓘ |
| length | approximately 303 m ⓘ |
| locatedIn |
Mozambique
ⓘ
Tete Province ⓘ |
| locatedInHemisphere | Southern Hemisphere ⓘ |
| locatedInTimeZone | Central Africa Time ⓘ |
| locatedInValley | Zambezi Valley ⓘ |
| locatedNear |
Songo
ⓘ
surface form:
town of Songo
|
| locatedOnRiver | Zambezi River ⓘ |
| notableFor |
being one of Africa’s largest artificial lakes
ⓘ
being one of Africa’s largest hydroelectric schemes ⓘ long-distance power export to South Africa ⓘ |
| numberOfTurbines | 5 ⓘ |
| openingDate | 1974 ⓘ |
| operator |
Cahora Bassa Dam
self-linksurface differs
ⓘ
surface form:
Hidroelectrica de Cahora Bassa
|
| partOf |
Zambezi Basin
ⓘ
surface form:
Zambezi River basin
|
| primaryPurpose | hydroelectric power generation ⓘ |
| regionServed | Southern Africa ⓘ |
| reservoirArea | large surface area relative to African reservoirs ⓘ |
| reservoirName |
Cahora Bassa Dam
self-linksurface differs
ⓘ
surface form:
Lake Cahora Bassa
|
| reservoirType | storage reservoir ⓘ |
| secondaryPurpose | regional power supply ⓘ |
| status | operational ⓘ |
| suppliesElectricityTo |
Mozambique
ⓘ
South Africa ⓘ Southern Africa ⓘ
surface form:
Southern Africa region
|
| transmissionLineDestination | South Africa ⓘ |
| transmissionType | HVDC ⓘ |
| transmissionVoltage | ±533 kV ⓘ |
| turbineType | Francis turbine ⓘ |
| watercourse | Zambezi River ⓘ |
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: Cahora Bassa Dam Description of subject: Cahora Bassa Dam is a major hydroelectric dam in Mozambique that forms one of Africa’s largest artificial lakes and supplies significant power to the region.
Referenced by (17)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cahora Bassa Reservoir
this entity surface form:
Cahora Bassa hydroelectric scheme
this entity surface form:
Cahora Bassa Dam reservoir
this entity surface form:
Cahora Bassa Lake
this entity surface form:
Lake Cahora Bassa
this entity surface form:
Hidroelectrica de Cahora Bassa
this entity surface form:
Lake Cahora Bassa
this entity surface form:
Cahora Bassa Hydroelectric Power Station
this entity surface form:
Cahora Bassa Reservoir