Kettwiger See
E320149
Kettwiger See is a reservoir on the Ruhr River in North Rhine-Westphalia, Germany, used for water management, recreation, and local energy production.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kettwiger See canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2982999 — 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: Kettwiger See Context triple: [Ruhr, hasReservoir, Kettwiger See]
-
A.
Stölpchensee
Stölpchensee is a small lake in southwestern Berlin, Germany, known for its scenic setting within the Grunewald forest and its connection to the nearby Großer Wannsee.
-
B.
Rummelsburger See
Rummelsburger See is a small inner-city lake and former industrial harbor basin in Berlin, Germany, known today for its residential waterfront and recreational areas.
-
C.
Schlachtensee
Schlachtensee is a lake and popular recreational area in southwestern Berlin, known for swimming, walking trails, and its surrounding forested landscape.
-
D.
Großer Döllnsee
Großer Döllnsee is a large lake in Brandenburg, Germany, situated in a forested area of the Schorfheide region.
-
E.
Würmsee
Würmsee is the historical name of the Bavarian lake now known as Starnberger See, one of Germany’s largest and most famous lakes near Munich.
- 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: Kettwiger See Target entity description: Kettwiger See is a reservoir on the Ruhr River in North Rhine-Westphalia, Germany, used for water management, recreation, and local energy production.
-
A.
Stölpchensee
Stölpchensee is a small lake in southwestern Berlin, Germany, known for its scenic setting within the Grunewald forest and its connection to the nearby Großer Wannsee.
-
B.
Rummelsburger See
Rummelsburger See is a small inner-city lake and former industrial harbor basin in Berlin, Germany, known today for its residential waterfront and recreational areas.
-
C.
Schlachtensee
Schlachtensee is a lake and popular recreational area in southwestern Berlin, known for swimming, walking trails, and its surrounding forested landscape.
-
D.
Großer Döllnsee
Großer Döllnsee is a large lake in Brandenburg, Germany, situated in a forested area of the Schorfheide region.
-
E.
Würmsee
Würmsee is the historical name of the Bavarian lake now known as Starnberger See, one of Germany’s largest and most famous lakes near Munich.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
artificial lake
ⓘ
reservoir ⓘ |
| basinCountry | Germany ⓘ |
| continent | Europe ⓘ |
| country | Germany ⓘ |
| drainageBasin |
Rhine River Basin
ⓘ
surface form:
Rhine basin
|
| hasEcosystemService |
aquatic habitat
ⓘ
landscape amenity value ⓘ |
| hasEnergyInfrastructure | small hydropower plant ⓘ |
| hasNearbyInfrastructure | bridges over the Ruhr ⓘ |
| hasNearbyLandUse |
recreational facilities
ⓘ
residential areas ⓘ |
| hasNearbySettlement | Essen-Kettwig ⓘ |
| hasPart |
Kettwig weir
ⓘ
hydroelectric power station ⓘ |
| hasRecreationalActivity | cycling along Ruhrtalradweg nearby ⓘ |
| hasShoreLength | several kilometres ⓘ |
| hasUse |
angling
ⓘ
boating ⓘ rowing ⓘ sailing ⓘ walking and hiking along shores ⓘ |
| isPartOf |
Ruhr area
ⓘ
surface form:
Ruhr valley landscape
|
| locatedDownstreamOf | Baldeneysee ⓘ |
| locatedIn |
Essen
ⓘ
North Rhine-Westphalia ⓘ |
| locatedInAdministrativeTerritory | Urban district of Essen ⓘ |
| locatedInProtectedArea | Ruhr valley landscape protection area ⓘ |
| locatedInRegion | Ruhr area ⓘ |
| locatedInTimeZone |
Central European Summer Time
ⓘ
Central European Time ⓘ |
| locatedNear | Kettwig ⓘ |
| locatedOnRiver | Ruhr ⓘ |
| locatedUpstreamOf | Ruhr mouth into Rhine ⓘ |
| managesFunction |
flood control
ⓘ
flow regulation of Ruhr ⓘ low-water augmentation ⓘ |
| outflow | Ruhr ⓘ |
| partOf |
Ruhr reservoir system
ⓘ
surface form:
Ruhr River water management system
Ruhr reservoir system ⓘ |
| use |
hydropower generation
ⓘ
local energy production ⓘ recreation ⓘ water management ⓘ |
| waterBodyType | run-of-river reservoir ⓘ |
| watercourse | Ruhr ⓘ |
| waterLevelControl | weir operation ⓘ |
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: Kettwiger See Description of subject: Kettwiger See is a reservoir on the Ruhr River in North Rhine-Westphalia, Germany, used for water management, recreation, and local energy production.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.