Wemmershoek Dam
E1001521
Wemmershoek Dam is a major water reservoir in South Africa’s Western Cape that supplies potable water to the Cape Town metropolitan area and surrounding regions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Wemmershoek Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12635925 — 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: Wemmershoek Dam Context triple: [Franschhoek Pass, locatedNear, Wemmershoek Dam]
-
A.
Vanderkloof Dam
Vanderkloof Dam is a major hydroelectric and irrigation dam in South Africa, located on the Orange River and forming one of the country’s largest reservoirs.
-
B.
Daan Dam
Daan Dam is the child of renowned Dutch architect Cees Dam.
-
C.
Amerongen weir
Amerongen weir is a major hydraulic structure on the Nederrijn in the Netherlands that regulates river water levels and flow through a system of floodgates.
-
D.
Driel weir
Driel weir is a key hydraulic structure in the Netherlands that regulates water levels and flow in the Rhine delta to support flood control, navigation, and water management.
-
E.
Diemel Dam
Diemel Dam is a German reservoir dam that was one of the targets attacked during the World War II Dambusters Raid.
- 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: Wemmershoek Dam Target entity description: Wemmershoek Dam is a major water reservoir in South Africa’s Western Cape that supplies potable water to the Cape Town metropolitan area and surrounding regions.
-
A.
Vanderkloof Dam
Vanderkloof Dam is a major hydroelectric and irrigation dam in South Africa, located on the Orange River and forming one of the country’s largest reservoirs.
-
B.
Daan Dam
Daan Dam is the child of renowned Dutch architect Cees Dam.
-
C.
Amerongen weir
Amerongen weir is a major hydraulic structure on the Nederrijn in the Netherlands that regulates river water levels and flow through a system of floodgates.
-
D.
Driel weir
Driel weir is a key hydraulic structure in the Netherlands that regulates water levels and flow in the Rhine delta to support flood control, navigation, and water management.
-
E.
Diemel Dam
Diemel Dam is a German reservoir dam that was one of the targets attacked during the World War II Dambusters Raid.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
gravity dam ⓘ reservoir ⓘ |
| basinCountry | South Africa NERFINISHED ⓘ |
| catchmentArea | Wemmershoek River catchment ⓘ |
| category |
Buildings and structures in the Western Cape
ⓘ
Dams in South Africa ⓘ Reservoirs in South Africa ⓘ |
| constructionBegan | 1951 ⓘ |
| country | South Africa ⓘ |
| elevation | approximately 235 metres above sea level ⓘ |
| hasEnvironmentalContext | mountain catchment area ⓘ |
| hasFunction |
regulation of river flow
ⓘ
storage of raw water for treatment ⓘ |
| hasUse |
drinking water supply
ⓘ
industrial water supply ⓘ |
| inception | 1957 ⓘ |
| isInfrastructureType | water supply infrastructure ⓘ |
| isMajorComponentOf | Cape Town water supply system NERFINISHED ⓘ |
| isPartOf | Cape Town bulk water supply network NERFINISHED ⓘ |
| locatedIn |
Cape Winelands District Municipality
NERFINISHED
ⓘ
Stellenbosch Local Municipality NERFINISHED ⓘ Western Cape ⓘ |
| locatedInProtectedArea | Wemmershoek Mountain Catchment Area NERFINISHED ⓘ |
| locatedInProvince | Western Cape NERFINISHED ⓘ |
| locatedInRegion | Cape Fold Mountains NERFINISHED ⓘ |
| locatedInRiverBasin | Wemmershoek River NERFINISHED ⓘ |
| locatedNear |
Cape Town
NERFINISHED
ⓘ
Franschhoek NERFINISHED ⓘ |
| locatedOn | Wemmershoek River NERFINISHED ⓘ |
| managedBy | City of Cape Town NERFINISHED ⓘ |
| nearbyCity |
Paarl
NERFINISHED
ⓘ
Stellenbosch NERFINISHED ⓘ |
| openingDate | 1957 ⓘ |
| ownedBy | City of Cape Town NERFINISHED ⓘ |
| partOf | Western Cape Water Supply System NERFINISHED ⓘ |
| purpose |
municipal water supply
ⓘ
potable water storage ⓘ |
| regionServed |
Cape Town metropolitan area
NERFINISHED
ⓘ
City of Cape Town NERFINISHED ⓘ |
| suppliesWaterTo |
Cape Town metropolitan area
NERFINISHED
ⓘ
Western Cape water supply system NERFINISHED ⓘ surrounding regions of Cape Town ⓘ |
| waterType | freshwater ⓘ |
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: Wemmershoek Dam Description of subject: Wemmershoek Dam is a major water reservoir in South Africa’s Western Cape that supplies potable water to the Cape Town metropolitan area and surrounding regions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.