Ptolemaida Power Station
E474778
Ptolemaida Power Station is a major lignite-fired thermal power plant in northern Greece that has long been one of the country’s key electricity-generating facilities.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Ptolemaida Power Station canonical | 2 |
| Ptolemaida V Power Plant | 1 |
| Ptolemaida power station | 1 |
| Ptolemaida power station complex | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4859249 — 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: Ptolemaida Power Station Context triple: [Ptolemaida, hasPowerPlant, Ptolemaida Power Station]
-
A.
Agios Dimitrios Power Station
Agios Dimitrios Power Station is a major lignite-fired power plant in northern Greece and one of the country’s largest electricity-generating facilities.
-
B.
Guthega Power Station
Guthega Power Station is a hydroelectric power plant in New South Wales, Australia, forming part of the large-scale Snowy Mountains Hydroelectric Scheme.
-
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.
Vamma power station
Vamma power station is a major hydroelectric power plant in Norway, harnessing the flow of the Glomma River to generate renewable energy.
-
E.
Liddell Power Station
Liddell Power Station is a large coal-fired power plant in New South Wales, Australia, long serving as a major source of electricity generation before its planned closure as part of the country’s energy transition.
- 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: Ptolemaida Power Station Target entity description: Ptolemaida Power Station is a major lignite-fired thermal power plant in northern Greece that has long been one of the country’s key electricity-generating facilities.
-
A.
Agios Dimitrios Power Station
Agios Dimitrios Power Station is a major lignite-fired power plant in northern Greece and one of the country’s largest electricity-generating facilities.
-
B.
Guthega Power Station
Guthega Power Station is a hydroelectric power plant in New South Wales, Australia, forming part of the large-scale Snowy Mountains Hydroelectric Scheme.
-
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.
Vamma power station
Vamma power station is a major hydroelectric power plant in Norway, harnessing the flow of the Glomma River to generate renewable energy.
-
E.
Liddell Power Station
Liddell Power Station is a large coal-fired power plant in New South Wales, Australia, long serving as a major source of electricity generation before its planned closure as part of the country’s energy transition.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
lignite-fired power plant
ⓘ
thermal power station ⓘ |
| connectedTo | European interconnected grid ⓘ |
| coolingSource | nearby water resources ⓘ |
| country | Greece ⓘ |
| emits |
carbon dioxide
ⓘ
nitrogen oxides ⓘ particulate matter ⓘ sulfur dioxide ⓘ |
| energySource | fossil fuel ⓘ |
| fuelType | lignite ⓘ |
| gridConnection | Greek national grid ⓘ |
| gridRole | base-load generation ⓘ |
| hasEnvironmentalImpact |
air pollution in Western Macedonia
ⓘ
greenhouse gas emissions ⓘ |
| hasType | steam turbine power plant ⓘ |
| locatedIn |
Ptolemaida
ⓘ
Western Macedonia ⓘ northern Greece ⓘ |
| locatedInBasin | Ptolemaida lignite basin ⓘ |
| operator |
Public Power Corporation
ⓘ
linked to:
Public Power Corporation S.A.
|
| ownedBy |
Public Power Corporation
ⓘ
linked to:
Public Power Corporation S.A.
|
| partOf | Greek power system ⓘ |
| regionServed |
Balkan power system
ⓘ
Greece ⓘ |
| regulator | Greek energy authorities ⓘ |
| sector | electric power generation ⓘ |
| significance |
key base-load power plant in Greece
ⓘ
major electricity-generating facility in Greece ⓘ |
| usesResourceFrom | nearby lignite mines ⓘ |
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: Ptolemaida Power Station Description of subject: Ptolemaida Power Station is a major lignite-fired thermal power plant in northern Greece that has long been one of the country’s key electricity-generating facilities.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ptolemaida Power Station
linked to: Ptolemaida Power Station
linked to: Ptolemaida Power Station