La Grande-4 generating station
E592524
La Grande-4 generating station is a major hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s large James Bay Project.
All labels observed (1)
| Label | Occurrences |
|---|---|
| La Grande-4 generating station canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6339225 — 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: La Grande-4 generating station Context triple: [La Grande River, hasHydroelectricDevelopment, La Grande-4 generating station]
-
A.
La Grande-1 generating station
La Grande-1 generating station is a hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s large James Bay Project on the La Grande River.
-
B.
La Grande-3 generating station
La Grande-3 generating station is a major hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s large James Bay Project.
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C.
La Grande-2-A generating station
La Grande-2-A generating station is a large hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s James Bay Project on the La Grande River.
-
D.
Beauharnois generating station
The Beauharnois generating station is a large hydroelectric power plant in Quebec, Canada, known for harnessing the flow of the Saint Lawrence River to produce electricity.
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E.
Long Spruce Generating Station
Long Spruce Generating Station is a large hydroelectric power plant in northern Manitoba, Canada, that forms part of the Nelson River generating system supplying electricity to the province and beyond.
- 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: La Grande-4 generating station Target entity description: La Grande-4 generating station is a major hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s large James Bay Project.
-
A.
La Grande-1 generating station
La Grande-1 generating station is a hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s large James Bay Project on the La Grande River.
-
B.
La Grande-3 generating station
La Grande-3 generating station is a major hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s large James Bay Project.
-
C.
La Grande-2-A generating station
La Grande-2-A generating station is a large hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s James Bay Project on the La Grande River.
-
D.
Beauharnois generating station
The Beauharnois generating station is a large hydroelectric power plant in Quebec, Canada, known for harnessing the flow of the Saint Lawrence River to produce electricity.
-
E.
Long Spruce Generating Station
Long Spruce Generating Station is a large hydroelectric power plant in northern Manitoba, Canada, that forms part of the Nelson River generating system supplying electricity to the province and beyond.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
hydroelectric power station
ⓘ
run-of-the-river power plant ⓘ |
| abbreviation | LG-4 NERFINISHED ⓘ |
| affectsTerritoryOf | Cree communities of James Bay area NERFINISHED ⓘ |
| annualGeneration | about 15 TWh ⓘ |
| commissioningDate | 1984 ⓘ |
| connectedBy | high-voltage transmission lines ⓘ |
| connectedToMarket | Quebec electricity market NERFINISHED ⓘ |
| country | Canada ⓘ |
| damType |
earthfill dam
ⓘ
gravity dam ⓘ |
| developer | Hydro-Québec NERFINISHED ⓘ |
| distanceFromMajorCity | about 1,000 km north of Montreal ⓘ |
| downstreamFrom | La Grande-2-A generating station NERFINISHED ⓘ |
| elevationOfReservoir | about 245 m above sea level ⓘ |
| generationType | renewable energy ⓘ |
| gridConnection | Hydro-Québec transmission network NERFINISHED ⓘ |
| hasLanguageOfOfficialName | French ⓘ |
| hasOwnerType | public utility ⓘ |
| hasPurpose |
electricity generation
ⓘ
peak load supply ⓘ |
| hasSpillway | yes ⓘ |
| installedCapacity | 2652 MW ⓘ |
| locatedIn | Quebec NERFINISHED ⓘ |
| locatedInAdministrativeTerritory | Nord-du-Québec NERFINISHED ⓘ |
| locatedInCountrySubdivision | Province of Quebec NERFINISHED ⓘ |
| locatedInHydrologicalBasin | La Grande River watershed ⓘ |
| locatedInRegion | James Bay region NERFINISHED ⓘ |
| locatedOnRiver | La Grande River NERFINISHED ⓘ |
| nameplateCapacity | 2652 MW ⓘ |
| numberOfTurbines | 9 ⓘ |
| officialNameInFrench | Centrale La Grande-4 NERFINISHED ⓘ |
| operator | Hydro-Québec NERFINISHED ⓘ |
| ownedBy | Hydro-Québec NERFINISHED ⓘ |
| partOf |
James Bay Project
NERFINISHED
ⓘ
La Grande complex NERFINISHED ⓘ |
| partOfProgram | Hydro-Québec large-scale northern development ⓘ |
| regulatoryAuthority | Quebec government NERFINISHED ⓘ |
| reservoirName | La Grande-4 Reservoir NERFINISHED ⓘ |
| reservoirSurfaceArea | 765 km² ⓘ |
| reservoirTotalCapacity | about 46 km³ ⓘ |
| spillwayType | gated spillway ⓘ |
| startOfConstruction | 1974 ⓘ |
| status | operational ⓘ |
| turbineType | Francis turbine ⓘ |
| upstreamFrom | La Grande-3 generating station NERFINISHED ⓘ |
| usesEnergySource | hydropower ⓘ |
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: La Grande-4 generating station Description of subject: La Grande-4 generating station is a major hydroelectric power plant in Quebec, Canada, that forms part of Hydro-Québec’s large James Bay Project.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.