Lake Copais
E123885
Lake Copais was a large, historically significant former lake in central Greece’s Boeotia region, known in antiquity for its extensive marshes and later for its complete drainage in the 19th century.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lake Copais canonical | 9 |
| Lake Copais (former) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1060891 — 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: Lake Copais Context triple: [Boeotia, hasGeographicalFeature, Lake Copais]
-
A.
Lake Vegoritida
Lake Vegoritida is a large freshwater lake in northern Greece, known for its scenic surroundings and ecological importance as a habitat for diverse bird and fish species.
-
B.
Tonetta Lake
Tonetta Lake is a small hamlet in the Town of Southeast in Putnam County, New York, known for its residential community centered around the nearby lake.
-
C.
Chilion
Chilion is a minor biblical figure in the Old Testament, known as one of Naomi and Elimelech’s sons who died in Moab before the family’s return to Bethlehem.
-
D.
Simly Lake
Simly Lake is a major freshwater reservoir and popular recreational spot located in the Margalla Hills near Islamabad, Pakistan.
-
E.
Soda Lake
Soda Lake is a dry alkali lakebed in the Mojave Desert of California, known for its white mineral crusts and stark desert landscape.
- 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: Lake Copais Target entity description: Lake Copais was a large, historically significant former lake in central Greece’s Boeotia region, known in antiquity for its extensive marshes and later for its complete drainage in the 19th century.
-
A.
Lake Vegoritida
Lake Vegoritida is a large freshwater lake in northern Greece, known for its scenic surroundings and ecological importance as a habitat for diverse bird and fish species.
-
B.
Tonetta Lake
Tonetta Lake is a small hamlet in the Town of Southeast in Putnam County, New York, known for its residential community centered around the nearby lake.
-
C.
Chilion
Chilion is a minor biblical figure in the Old Testament, known as one of Naomi and Elimelech’s sons who died in Moab before the family’s return to Bethlehem.
-
D.
Simly Lake
Simly Lake is a major freshwater reservoir and popular recreational spot located in the Margalla Hills near Islamabad, Pakistan.
-
E.
Soda Lake
Soda Lake is a dry alkali lakebed in the Mojave Desert of California, known for its white mineral crusts and stark desert landscape.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
former lake
ⓘ
geographical feature ⓘ |
| alternativeName |
Copaean Lake
ⓘ
Kopaida ⓘ |
| ancientEngineering | prehistoric drainage works attributed to Minyans ⓘ |
| approximateMaximumLength | about 20 km ⓘ |
| approximateMaximumWidth | about 14 km ⓘ |
| associatedWithMythology | Greek mythology ⓘ |
| associatedWithPeople | Minyans of Orchomenus ⓘ |
| basinCountry | Greece ⓘ |
| characteristicInAntiquity |
marshy shoreline
ⓘ
prone to flooding ⓘ |
| country | Greece ⓘ |
| drainageCompletedInCentury | 19th century ⓘ |
| drainageImpact |
reduction of malaria risk
ⓘ
transformation of local economy ⓘ |
| drainageMethod | canals and tunnels ⓘ |
| drainageResult | creation of fertile plain ⓘ |
| drainedBy | 19th-century engineering works ⓘ |
| drainedFor | agricultural land reclamation ⓘ |
| eraOfMajorDrainageWorks | late 19th century ⓘ |
| formerTypeOfWaterBody | lake ⓘ |
| hasGreekName | Κωπαΐδα λίμνη ⓘ |
| historicalRegion |
Ancient Boeotia
ⓘ
linked to:
Boeotia
|
| historicalSignificance |
major wetland of ancient Greece
ⓘ
mentioned by ancient Greek authors ⓘ |
| knownFor |
complete drainage in the 19th century
ⓘ
extensive marshes in antiquity ⓘ |
| languageOfName | Greek ⓘ |
| locatedEastOf | Mount Parnassus ⓘ |
| locatedIn |
Boeotia
ⓘ
Central Greece ⓘ
linked to:
central Greece
|
| locatedOnContinent | Europe ⓘ |
| locatedWestOf | Euboean Gulf ⓘ |
| mentionedIn | ancient Greek literature ⓘ |
| modernAdministrativeRegion | Regional Unit of Boeotia ⓘ |
| nearAncientCity |
Chaeronea
ⓘ
Haliartus ⓘ Orchomenus ⓘ |
| outflow |
Cephissus River
ⓘ
Man-made drainage channels ⓘ |
| partOf | drainage basin of the Cephissus River ⓘ |
| presentDayUseOfArea | agricultural plain ⓘ |
| region | Boeotian plain ⓘ |
| status | drained ⓘ |
| usedForInAntiquity |
fishing
ⓘ
reeds and marsh resources ⓘ |
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: Lake Copais Description of subject: Lake Copais was a large, historically significant former lake in central Greece’s Boeotia region, known in antiquity for its extensive marshes and later for its complete drainage in the 19th century.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Lake Copais