Imatra switchyard
E1030914
Imatra switchyard is an electrical substation complex that distributes and transmits the power generated by the Imatra hydropower plant into the wider grid.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Imatra switchyard canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13279545 — 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: Imatra switchyard Context triple: [Imatra hydropower plant, connectsTo, Imatra switchyard]
-
A.
Imatra railway station
Imatra railway station is a passenger rail station in the town of Imatra in southeastern Finland, serving as a regional transport hub on the Finnish railway network.
-
B.
Kejaksan Station
Kejaksan Station is a major railway station in Cirebon, Indonesia, serving as an important hub for intercity and regional train services on Java.
-
C.
Kivenlahti station
Kivenlahti station is a western endpoint of the Helsinki Metro system serving the Kivenlahti district in Espoo, Finland.
-
D.
Mellunmäki station
Mellunmäki station is an eastern Helsinki Metro station in the Mellunmäki district, notable for being one of the metro system’s outermost endpoints.
-
E.
Imatra hydropower plant
The Imatra hydropower plant is one of Finland’s largest and oldest hydroelectric stations, harnessing the rapids at Imatra to generate electricity and serving as a notable industrial and tourist landmark.
- 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: Imatra switchyard Target entity description: Imatra switchyard is an electrical substation complex that distributes and transmits the power generated by the Imatra hydropower plant into the wider grid.
-
A.
Imatra railway station
Imatra railway station is a passenger rail station in the town of Imatra in southeastern Finland, serving as a regional transport hub on the Finnish railway network.
-
B.
Kejaksan Station
Kejaksan Station is a major railway station in Cirebon, Indonesia, serving as an important hub for intercity and regional train services on Java.
-
C.
Kivenlahti station
Kivenlahti station is a western endpoint of the Helsinki Metro system serving the Kivenlahti district in Espoo, Finland.
-
D.
Mellunmäki station
Mellunmäki station is an eastern Helsinki Metro station in the Mellunmäki district, notable for being one of the metro system’s outermost endpoints.
-
E.
Imatra hydropower plant
The Imatra hydropower plant is one of Finland’s largest and oldest hydroelectric stations, harnessing the rapids at Imatra to generate electricity and serving as a notable industrial and tourist landmark.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
electrical substation complex
ⓘ
high-voltage switchyard ⓘ |
| associatedWith |
Imatra dam
ⓘ
Vuoksi hydropower system ⓘ |
| connectedTo | Imatra hydropower plant ⓘ |
| connectsTo |
local distribution network
ⓘ
regional transmission network ⓘ |
| connectsVoltageLevel | high-voltage transmission lines ⓘ |
| country | Finland ⓘ |
| energySource | hydropower ⓘ |
| function |
grid interconnection
ⓘ
power distribution ⓘ power transmission ⓘ |
| gridCodeRegion |
Nordic synchronous area
ⓘ
linked to:
Nordic synchronous area (via HVDC links)
|
| gridRole | part of Finnish national grid ⓘ |
| hasComponent |
busbars
ⓘ
circuit breakers ⓘ control and protection systems ⓘ disconnectors ⓘ instrument transformers ⓘ transformers ⓘ |
| industry | electric power industry ⓘ |
| locatedIn |
Imatra
ⓘ
South Karelia ⓘ eastern Finland ⓘ |
| locatedOnRiver | Vuoksi River NERFINISHED ⓘ |
| ownedBy | Finnish power sector operator ⓘ |
| purpose | to feed electricity from Imatra hydropower plant into wider grid ⓘ |
| serves | Imatra hydropower plant ⓘ |
| status | in operation ⓘ |
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: Imatra switchyard Description of subject: Imatra switchyard is an electrical substation complex that distributes and transmits the power generated by the Imatra hydropower plant into the wider grid.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.