Harkortsee
E317106
Harkortsee is an artificial lake and recreational reservoir on the Ruhr River in North Rhine-Westphalia, Germany, popular for water sports and leisure activities.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Harkortsee canonical | 2 |
| Kemnader See | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2982996 — 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: Harkortsee Context triple: [Ruhr, hasReservoir, Harkortsee]
-
A.
Tyresö-Flaten Lake
Tyresö-Flaten Lake is a natural lake in Tyresö Municipality, Sweden, known for its scenic surroundings and recreational opportunities such as swimming and outdoor activities.
-
B.
Obersee
Obersee is a small, picturesque alpine lake in Bavaria, Germany, known for its clear emerald waters and dramatic mountain surroundings near the Königssee.
-
C.
Solina Lake
Solina Lake is a large artificial reservoir in southeastern Poland, renowned for its scenic mountain setting, hydroelectric dam, and popularity as a tourist and water-sports destination.
-
D.
Drevviken Lake
Drevviken Lake is a large recreational lake in the Stockholm region of Sweden, known for its natural surroundings and opportunities for swimming, fishing, and outdoor activities.
-
E.
Volkerak lake
Volkerak lake is a Dutch freshwater lake in the Rhine–Meuse–Scheldt delta, created as part of the Delta Works water management system.
- 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: Harkortsee Target entity description: Harkortsee is an artificial lake and recreational reservoir on the Ruhr River in North Rhine-Westphalia, Germany, popular for water sports and leisure activities.
-
A.
Tyresö-Flaten Lake
Tyresö-Flaten Lake is a natural lake in Tyresö Municipality, Sweden, known for its scenic surroundings and recreational opportunities such as swimming and outdoor activities.
-
B.
Obersee
Obersee is a small, picturesque alpine lake in Bavaria, Germany, known for its clear emerald waters and dramatic mountain surroundings near the Königssee.
-
C.
Solina Lake
Solina Lake is a large artificial reservoir in southeastern Poland, renowned for its scenic mountain setting, hydroelectric dam, and popularity as a tourist and water-sports destination.
-
D.
Drevviken Lake
Drevviken Lake is a large recreational lake in the Stockholm region of Sweden, known for its natural surroundings and opportunities for swimming, fishing, and outdoor activities.
-
E.
Volkerak lake
Volkerak lake is a Dutch freshwater lake in the Rhine–Meuse–Scheldt delta, created as part of the Delta Works water management system.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
artificial lake
ⓘ
recreational lake ⓘ reservoir ⓘ |
| basinCountry | Germany ⓘ |
| country | Germany ⓘ |
| hasActivity |
cycling
ⓘ
jogging ⓘ pedal boating ⓘ stand-up paddling ⓘ walking ⓘ windsurfing ⓘ |
| hasCityOnShore |
Herdecke
ⓘ
Wetter (Ruhr) ⓘ |
| hasFacility |
boat rental
ⓘ
cafés ⓘ lakeside promenade ⓘ marina ⓘ restaurants ⓘ |
| hasFunction |
flood control
ⓘ
local recreation area ⓘ low-water regulation ⓘ tourism ⓘ |
| hasLength | approximately 3 km ⓘ |
| hasNearbyInfrastructure |
Ruhrtalbahn
ⓘ
surface form:
Ruhr Valley Railway
RuhrtalRadweg cycling route ⓘ |
| hasShoreLength | approximately 8 km ⓘ |
| hasSurfaceArea | approximately 1.37 km² ⓘ |
| hasWidth | up to about 0.4 km ⓘ |
| inflow | Ruhr ⓘ |
| locatedIn |
Ennepe-Ruhr-Kreis
ⓘ
North Rhine-Westphalia ⓘ |
| locatedNear |
Hagen
ⓘ
Herdecke ⓘ Wetter (Ruhr) ⓘ |
| locatedOnRiver | Ruhr ⓘ |
| namedAfter | Friedrich Harkort ⓘ |
| outflow | Ruhr ⓘ |
| partOf | Ruhr reservoir system ⓘ |
| region | Ruhr area ⓘ |
| usedFor |
fishing
ⓘ
leisure activities ⓘ recreation ⓘ rowing ⓘ sailing ⓘ water sports ⓘ |
| waterBodyType | impounded section of river ⓘ |
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: Harkortsee Description of subject: Harkortsee is an artificial lake and recreational reservoir on the Ruhr River in North Rhine-Westphalia, Germany, popular for water sports and leisure activities.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Kemnader See