Grandval Dam
E289366
Grandval Dam is a large hydroelectric dam in southern France, known for impounding the Truyère River to form the Lac de Grandval reservoir.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Grandval Dam canonical | 4 |
| Garabit–Grandval Dam | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2710859 — 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: Grandval Dam Context triple: [Truyère River, hasDam, Grandval Dam]
-
A.
Serre-Ponçon Dam
Serre-Ponçon Dam is a large hydroelectric and irrigation dam in southeastern France that creates one of Western Europe’s biggest artificial lakes.
-
B.
Bütgenbach Dam
Bütgenbach Dam is a hydroelectric and flood-control structure in eastern Belgium that creates Lake Bütgenbach, a popular site for recreation and water sports.
-
C.
Lahontan Dam
Lahontan Dam is a large early-20th-century concrete gravity dam in western Nevada that creates Lahontan Reservoir for irrigation, flood control, and recreation.
-
D.
Colbún Dam
Colbún Dam is a major hydroelectric dam in Chile that generates power from the Maule River and plays a key role in the country’s energy supply.
-
E.
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.
- 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: Grandval Dam Target entity description: Grandval Dam is a large hydroelectric dam in southern France, known for impounding the Truyère River to form the Lac de Grandval reservoir.
-
A.
Serre-Ponçon Dam
Serre-Ponçon Dam is a large hydroelectric and irrigation dam in southeastern France that creates one of Western Europe’s biggest artificial lakes.
-
B.
Bütgenbach Dam
Bütgenbach Dam is a hydroelectric and flood-control structure in eastern Belgium that creates Lake Bütgenbach, a popular site for recreation and water sports.
-
C.
Lahontan Dam
Lahontan Dam is a large early-20th-century concrete gravity dam in western Nevada that creates Lahontan Reservoir for irrigation, flood control, and recreation.
-
D.
Colbún Dam
Colbún Dam is a major hydroelectric dam in Chile that generates power from the Maule River and plays a key role in the country’s energy supply.
-
E.
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.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
hydroelectric dam ⓘ |
| basinCountry | France ⓘ |
| continent | Europe ⓘ |
| country | France ⓘ |
| createsReservoir | Lac de Grandval ⓘ |
| energySource | hydropower ⓘ |
| hasNameInFrench | Barrage de Grandval ⓘ |
| hasReservoir | Lac de Grandval ⓘ |
| hasReservoirUse |
boating
ⓘ
fishing ⓘ recreation ⓘ |
| impounds | Truyère River ⓘ |
| isInfrastructureType | dam ⓘ |
| isPartOfSector | electricity generation infrastructure ⓘ |
| isTouristAttraction | true ⓘ |
| locatedIn |
southern France
ⓘ
linked to:
Southern France
|
| locatedInDepartment | Cantal ⓘ |
| locatedInMountainRegion | Massif Central ⓘ |
| locatedInRegion |
Auvergne-Rhône-Alpes
ⓘ
linked to:
Auvergne-Rhône-Alpes region
|
| locatedNear | Garabit Viaduct ⓘ |
| locatedOn | Truyère River ⓘ |
| locatedOnRiver | Truyère River ⓘ |
| partOf | Truyère River hydroelectric scheme ⓘ |
| primaryUse | hydroelectric power generation ⓘ |
| reservoirName | Lac de Grandval ⓘ |
| use |
flood control
ⓘ
recreation ⓘ water storage ⓘ |
| watercourse | Truyère 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: Grandval Dam Description of subject: Grandval Dam is a large hydroelectric dam in southern France, known for impounding the Truyère River to form the Lac de Grandval reservoir.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Grandval Dam