Κωπαΐδα λίμνη
E511283
Κωπαΐδα λίμνη is a former large karst lake in Boeotia, central Greece, historically significant for its ancient drainage works and fertile surrounding plain.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lake Kopais (ancient lake) | 1 |
| Κωπαΐδα λίμνη canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5338584 — 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: Κωπαΐδα λίμνη Context triple: [Lake Copais, hasGreekName, Κωπαΐδα λίμνη]
-
A.
Paliastomi Lake
Paliastomi Lake is a coastal lagoon in western Georgia known for its rich biodiversity and inclusion within the protected wetlands of Kolkheti National Park.
-
B.
Lake Plastiras
Lake Plastiras is an artificial reservoir in central Greece, renowned for its scenic mountain setting and role in irrigation, hydroelectric power, and tourism.
-
C.
Lake Orestiada
Lake Orestiada is a picturesque freshwater lake in northern Greece, renowned for encircling the historic town of Kastoria and attracting visitors with its natural beauty and birdlife.
-
D.
Lake Koroneia
Lake Koroneia is a shallow, ecologically significant lake in northern Greece that has suffered severe environmental degradation due to pollution and water mismanagement.
-
E.
Lake Pamvotida
Lake Pamvotida is a scenic freshwater lake in northwestern Greece, best known for bordering the city of Ioannina and its historic island settlements.
- 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: Κωπαΐδα λίμνη Target entity description: Κωπαΐδα λίμνη is a former large karst lake in Boeotia, central Greece, historically significant for its ancient drainage works and fertile surrounding plain.
-
A.
Paliastomi Lake
Paliastomi Lake is a coastal lagoon in western Georgia known for its rich biodiversity and inclusion within the protected wetlands of Kolkheti National Park.
-
B.
Lake Plastiras
Lake Plastiras is an artificial reservoir in central Greece, renowned for its scenic mountain setting and role in irrigation, hydroelectric power, and tourism.
-
C.
Lake Orestiada
Lake Orestiada is a picturesque freshwater lake in northern Greece, renowned for encircling the historic town of Kastoria and attracting visitors with its natural beauty and birdlife.
-
D.
Lake Koroneia
Lake Koroneia is a shallow, ecologically significant lake in northern Greece that has suffered severe environmental degradation due to pollution and water mismanagement.
-
E.
Lake Pamvotida
Lake Pamvotida is a scenic freshwater lake in northwestern Greece, best known for bordering the city of Ioannina and its historic island settlements.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
former lake
ⓘ
geographical feature ⓘ karst lake ⓘ |
| basinCountry | Greece NERFINISHED ⓘ |
| climate | Mediterranean climate ⓘ |
| country | Greece ⓘ |
| currentUseOfArea |
agricultural plain
ⓘ
intensive farming ⓘ |
| drainageBasin |
Βοιωτικός Ασωπός
ⓘ
Κηφισός Βοιωτίας ⓘ Μόρνος NERFINISHED ⓘ |
| drainedBy |
Compagnie Française de la Copais
NERFINISHED
ⓘ
French engineering companies ⓘ |
| drainedInPeriod |
1880s
ⓘ
late 19th century ⓘ |
| hasAlternativeName |
Copaic Lake
ⓘ
Lake Copais NERFINISHED ⓘ Λίμνη Κωπαΐδα NERFINISHED ⓘ |
| hasArea | about 200 square kilometres ⓘ |
| hasAverageDepth | about 3 to 5 metres ⓘ |
| hasGreekName | Κωπαΐδα λίμνη ⓘ |
| hasHydrologicalType |
endorheic basin
ⓘ
karst polje ⓘ |
| hasLatinName | Copaïs NERFINISHED ⓘ |
| hasMaximumDepth | about 8 to 10 metres ⓘ |
| hasMaximumLength | approximately 20 kilometres ⓘ |
| hasMaximumWidth | approximately 12 kilometres ⓘ |
| hasOutflow |
καταβόθρες (ponors)
ⓘ
υπόγεια απορροή προς τον Ευβοϊκό κόλπο ⓘ |
| historicalRegion | Ancient Boeotia NERFINISHED ⓘ |
| knownFor |
Mycenaean drainage system
ⓘ
ancient drainage works ⓘ fertile surrounding plain ⓘ prehistoric hydraulic engineering ⓘ |
| locatedIn |
Boeotia
NERFINISHED
ⓘ
Central Greece NERFINISHED ⓘ Greek mainland ⓘ Βοιωτία NERFINISHED ⓘ Κωπαΐδα πεδιάδα ⓘ |
| locatedInTimeZone | Eastern European Time ⓘ |
| locatedNear |
Euboean Gulf
NERFINISHED
ⓘ
Mount Helicon NERFINISHED ⓘ Mount Parnassus NERFINISHED ⓘ |
| mentionedIn |
Pausanias’ Description of Greece
NERFINISHED
ⓘ
Strabo’s Geographica NERFINISHED ⓘ |
| nearbySettlement |
Αλίαρτος
NERFINISHED
ⓘ
Θήβα NERFINISHED ⓘ Λιβαδειά NERFINISHED ⓘ Ορχομενός Βοιωτίας NERFINISHED ⓘ Χαιρώνεια 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: Κωπαΐδα λίμνη Description of subject: Κωπαΐδα λίμνη is a former large karst lake in Boeotia, central Greece, historically significant for its ancient drainage works and fertile surrounding plain.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lake Kopais (ancient lake)