Ivaylovgrad Dam
E499086
Ivaylovgrad Dam is a hydroelectric and irrigation dam in southern Bulgaria, forming part of the Arda River cascade near the town of Ivaylovgrad.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ivaylovgrad Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5117572 — 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: Ivaylovgrad Dam Context triple: [Arda River, hasDam, Ivaylovgrad Dam]
-
A.
Kardzhali Dam
Kardzhali Dam is a large hydroelectric and irrigation dam in southern Bulgaria, forming part of a major water management system on the Arda River.
-
B.
Dubăsari Dam
Dubăsari Dam is a hydroelectric dam and reservoir complex on the Dniester River in Moldova, used for power generation, irrigation, and water regulation.
-
C.
Salagou Dam
Salagou Dam is a French hydraulic structure in the Hérault department that created the artificial Lac du Salagou, now known for its striking red landscapes and recreational activities.
-
D.
Valvan Dam
Valvan Dam is a scenic reservoir and popular picnic spot near Lonavala in Maharashtra, known for its tranquil lake, lush surroundings, and pleasant climate.
-
E.
Istra hydroelectric dam
The Istra hydroelectric dam is a power-generating and water-regulating structure associated with the Istrinskoye Reservoir in the Moscow region of Russia.
- 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: Ivaylovgrad Dam Target entity description: Ivaylovgrad Dam is a hydroelectric and irrigation dam in southern Bulgaria, forming part of the Arda River cascade near the town of Ivaylovgrad.
-
A.
Kardzhali Dam
Kardzhali Dam is a large hydroelectric and irrigation dam in southern Bulgaria, forming part of a major water management system on the Arda River.
-
B.
Dubăsari Dam
Dubăsari Dam is a hydroelectric dam and reservoir complex on the Dniester River in Moldova, used for power generation, irrigation, and water regulation.
-
C.
Salagou Dam
Salagou Dam is a French hydraulic structure in the Hérault department that created the artificial Lac du Salagou, now known for its striking red landscapes and recreational activities.
-
D.
Valvan Dam
Valvan Dam is a scenic reservoir and popular picnic spot near Lonavala in Maharashtra, known for its tranquil lake, lush surroundings, and pleasant climate.
-
E.
Istra hydroelectric dam
The Istra hydroelectric dam is a power-generating and water-regulating structure associated with the Istrinskoye Reservoir in the Moscow region of Russia.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
hydroelectric dam ⓘ irrigation dam ⓘ |
| annualGeneration | 190 ⓘ |
| annualGenerationUnit | gigawatt-hour ⓘ |
| basinCountry | Bulgaria NERFINISHED ⓘ |
| BulgarianName | Язовир „Ивайловград“ NERFINISHED ⓘ |
| constructionStartDate | 1964 ⓘ |
| country | Bulgaria ⓘ |
| downstreamFrom | Kardzhali Dam NERFINISHED ⓘ |
| hasReservoir | Ivaylovgrad Reservoir NERFINISHED ⓘ |
| height | 73 ⓘ |
| heightUnit | metre ⓘ |
| installedCapacity | 104 ⓘ |
| installedCapacityUnit | megawatt ⓘ |
| languageOfName | Bulgarian ⓘ |
| length | 250 ⓘ |
| lengthUnit | metre ⓘ |
| locatedIn | southern Bulgaria ⓘ |
| locatedInAdministrativeTerritory | Haskovo Province NERFINISHED ⓘ |
| locatedInRegion | Eastern Rhodope Mountains NERFINISHED ⓘ |
| locatedNear | Ivaylovgrad NERFINISHED ⓘ |
| locatedOnRiver | Arda River NERFINISHED ⓘ |
| material | concrete ⓘ |
| numberOfTurbines | 4 ⓘ |
| openingDate | 1969 ⓘ |
| operator | NEK EAD NERFINISHED ⓘ |
| ownedBy | National Electric Company of Bulgaria NERFINISHED ⓘ |
| partOf |
Arda River cascade
NERFINISHED
ⓘ
Bulgarian national power grid ⓘ |
| plantName | Ivaylovgrad Hydroelectric Power Plant NERFINISHED ⓘ |
| plantType | conventional hydroelectric power plant ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ |
| reservoirCapacityUnit | cubic metre ⓘ |
| reservoirName | Ivaylovgrad Reservoir NERFINISHED ⓘ |
| reservoirSurfaceArea | 15 ⓘ |
| reservoirSurfaceAreaUnit | square kilometre ⓘ |
| reservoirTotalCapacity | 157000000 ⓘ |
| riverSystem | Maritsa River basin NERFINISHED ⓘ |
| spillwayType | gated overflow spillway ⓘ |
| turbineType | Francis turbine ⓘ |
| upstreamFrom | Studen Kladenets Dam NERFINISHED ⓘ |
| usedFor |
fishing
ⓘ
recreation ⓘ water sports ⓘ |
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: Ivaylovgrad Dam Description of subject: Ivaylovgrad Dam is a hydroelectric and irrigation dam in southern Bulgaria, forming part of the Arda River cascade near the town of Ivaylovgrad.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.