Bear Swamp Pumped Storage Project
E532430
Bear Swamp Pumped Storage Project is a hydroelectric pumped-storage power facility in Massachusetts that stores and generates electricity by moving water between an upper and lower reservoir on the Deerfield River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bear Swamp Pumped Storage Project canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5520408 — 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: Bear Swamp Pumped Storage Project Context triple: [Deerfield River, hasDam, Bear Swamp Pumped Storage Project]
-
A.
Blenheim-Gilboa Pumped Storage Power Project
Blenheim-Gilboa Pumped Storage Power Project is a large hydroelectric pumped-storage facility in New York State that stores and generates electricity by moving water between two reservoirs to help balance the power grid.
-
B.
Lewiston Pump-Generating Plant
The Lewiston Pump-Generating Plant is a hydroelectric pumped-storage facility near Niagara Falls that works in tandem with the Robert Moses Niagara Power Plant to balance electricity supply and demand.
-
C.
Olidan power station
Olidan power station is one of Sweden’s oldest large-scale hydroelectric power plants, located in Trollhättan and historically important for the country’s industrial electrification.
-
D.
Ohakuri Power Station
Ohakuri Power Station is a major hydroelectric power station on New Zealand’s North Island that harnesses the Waikato River to generate electricity.
-
E.
Niagara Falls AC power project
The Niagara Falls AC power project was a pioneering late-19th-century hydroelectric installation that demonstrated the practicality of long-distance alternating current transmission and helped establish AC as the dominant standard for electric power systems.
- 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: Bear Swamp Pumped Storage Project Target entity description: Bear Swamp Pumped Storage Project is a hydroelectric pumped-storage power facility in Massachusetts that stores and generates electricity by moving water between an upper and lower reservoir on the Deerfield River.
-
A.
Blenheim-Gilboa Pumped Storage Power Project
Blenheim-Gilboa Pumped Storage Power Project is a large hydroelectric pumped-storage facility in New York State that stores and generates electricity by moving water between two reservoirs to help balance the power grid.
-
B.
Lewiston Pump-Generating Plant
The Lewiston Pump-Generating Plant is a hydroelectric pumped-storage facility near Niagara Falls that works in tandem with the Robert Moses Niagara Power Plant to balance electricity supply and demand.
-
C.
Olidan power station
Olidan power station is one of Sweden’s oldest large-scale hydroelectric power plants, located in Trollhättan and historically important for the country’s industrial electrification.
-
D.
Ohakuri Power Station
Ohakuri Power Station is a major hydroelectric power station on New Zealand’s North Island that harnesses the Waikato River to generate electricity.
-
E.
Niagara Falls AC power project
The Niagara Falls AC power project was a pioneering late-19th-century hydroelectric installation that demonstrated the practicality of long-distance alternating current transmission and helped establish AC as the dominant standard for electric power systems.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
hydroelectric power plant
ⓘ
pumped-storage hydroelectric power station ⓘ |
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| countrySubdivision | New England NERFINISHED ⓘ |
| energySource | gravitational potential energy of water ⓘ |
| energyStorageType | large-scale mechanical energy storage ⓘ |
| generatesElectricityBy | releasing water from upper reservoir through turbines ⓘ |
| gridConnection | regional transmission grid ⓘ |
| gridRole |
frequency regulation
ⓘ
load balancing ⓘ reserve capacity ⓘ |
| hasComponent |
hydroelectric turbines
ⓘ
lower reservoir ⓘ powerhouse ⓘ pumping station ⓘ upper reservoir ⓘ |
| hasLowerReservoir | Deerfield River lower reservoir ⓘ |
| hasUpperReservoir | Bear Swamp upper reservoir NERFINISHED ⓘ |
| isPartOf | regional power system of New England ⓘ |
| locatedIn | Massachusetts ⓘ |
| locatedOnRiver | Deerfield River NERFINISHED ⓘ |
| operatorType | electric utility ⓘ |
| primaryFunction |
energy storage
ⓘ
peak electricity generation ⓘ |
| sector | electric power industry ⓘ |
| state | Massachusetts ⓘ |
| storesEnergyBy | pumping water from lower reservoir to upper reservoir ⓘ |
| usesTechnology | pumped-storage hydropower ⓘ |
| watercourse | Deerfield River NERFINISHED ⓘ |
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: Bear Swamp Pumped Storage Project Description of subject: Bear Swamp Pumped Storage Project is a hydroelectric pumped-storage power facility in Massachusetts that stores and generates electricity by moving water between an upper and lower reservoir on the Deerfield River.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.