Lake Koka
E762160
Lake Koka is a man-made reservoir in Ethiopia’s central Rift Valley, created by the Koka Dam on the Awash River and used for hydroelectric power, irrigation, and fishing.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lake Koka canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8860615 — 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 Koka Context triple: [Oromia Region, hasLake, Lake Koka]
-
A.
Lake Turano
Lake Turano is an artificial lake in the Lazio region of central Italy, known for its scenic mountain setting and medieval villages along its shores.
-
B.
Siliserh Lake
Siliserh Lake is a picturesque artificial reservoir near Alwar in Rajasthan, India, known for its scenic surroundings and historic lakeside palace.
-
C.
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.
-
D.
Lake Harku
Lake Harku is a small lake in northern Estonia known for recreation and its proximity to the capital city, Tallinn.
-
E.
Jasna Lake
Jasna Lake is a picturesque alpine lake in northwestern Slovenia, known for its clear turquoise water and scenic mountain backdrop near the resort town of Kranjska Gora.
- 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 Koka Target entity description: Lake Koka is a man-made reservoir in Ethiopia’s central Rift Valley, created by the Koka Dam on the Awash River and used for hydroelectric power, irrigation, and fishing.
-
A.
Lake Turano
Lake Turano is an artificial lake in the Lazio region of central Italy, known for its scenic mountain setting and medieval villages along its shores.
-
B.
Siliserh Lake
Siliserh Lake is a picturesque artificial reservoir near Alwar in Rajasthan, India, known for its scenic surroundings and historic lakeside palace.
-
C.
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.
-
D.
Lake Harku
Lake Harku is a small lake in northern Estonia known for recreation and its proximity to the capital city, Tallinn.
-
E.
Jasna Lake
Jasna Lake is a picturesque alpine lake in northwestern Slovenia, known for its clear turquoise water and scenic mountain backdrop near the resort town of Kranjska Gora.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| associatedHydropowerPlant | Koka Hydroelectric Power Station ⓘ |
| basinCountry | Ethiopia ⓘ |
| completionOfAssociatedDam | 1960 ⓘ |
| constructionStartOfAssociatedDam | 1957 ⓘ |
| continent | Africa ⓘ |
| country | Ethiopia ⓘ |
| createdBy | Koka Dam ⓘ |
| createdForPurpose |
flood regulation
ⓘ
hydropower production ⓘ irrigation water storage ⓘ |
| ecosystemType | freshwater lake ⓘ |
| formedBy | impoundment of the Awash River ⓘ |
| hasFunction |
regulation of Awash River flow
ⓘ
support of downstream agriculture ⓘ support of industrial water use ⓘ |
| inflow | Awash River ⓘ |
| locatedIn |
Central Rift Valley
ⓘ
Ethiopia ⓘ Ethiopian Rift Valley ⓘ
linked to:
Central Rift Valley
|
| locatedInRegion | Oromia Region ⓘ |
| locatedInZone | East Shewa Zone ⓘ |
| locatedNear | Koka town ⓘ |
| locatedSouthEastOf | Addis Ababa ⓘ |
| nearbyCity |
Adama
ⓘ
Mojo ⓘ |
| nearbyInfrastructure | Koka Dam ⓘ |
| outflow | Awash River ⓘ |
| partOfRiverBasin | Awash River Basin ⓘ |
| primaryFunction | storage reservoir for Koka Dam ⓘ |
| regionHydrologicalContext |
Main Ethiopian Rift
ⓘ
linked to:
Main Ethiopian Rift lake system
|
| subjectTo |
sedimentation
ⓘ
water level fluctuations ⓘ water pollution concerns ⓘ |
| supportsActivity |
artisanal fishing
ⓘ
commercial fishing ⓘ large-scale irrigation schemes ⓘ small-scale irrigation ⓘ |
| use |
fishing
ⓘ
flood control ⓘ hydroelectric power generation ⓘ irrigation ⓘ |
| usedBySector |
agricultural sector
ⓘ
energy sector ⓘ fisheries sector ⓘ |
| watercourse | Awash River ⓘ |
| waterType | freshwater ⓘ |
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 Koka Description of subject: Lake Koka is a man-made reservoir in Ethiopia’s central Rift Valley, created by the Koka Dam on the Awash River and used for hydroelectric power, irrigation, and fishing.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.