Greifensee (lake)
E497531
Greifensee is a small glacial lake in the Canton of Zürich in Switzerland, known for its scenic surroundings, nature reserves, and recreational activities such as boating and hiking.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Greifensee | 5 |
| Lake Pfäffikon | 2 |
| Greifensee (Lake Greifen) | 1 |
| Greifensee (another lake in canton of Zürich) | 1 |
| Greifensee (lake) canonical | 1 |
| Greifensee (nearby) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4888903 — 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: Greifensee (lake) Context triple: [Canton of Zürich, contains, Greifensee (lake)]
-
A.
Lake Pfäffikon (Bern)
Lake Pfäffikon (Bern) is a small lake in the canton of Bern, Switzerland, situated within the Aare river’s drainage basin and known for its natural surroundings and local recreation.
-
B.
Lake Zurich
Lake Zurich is a picturesque glacial lake in Switzerland, bordered by the city of Zurich and known for its recreational activities, scenic promenades, and surrounding alpine landscapes.
-
C.
Lake Thun
Lake Thun is a large alpine lake in the Bernese Oberland region of Switzerland, renowned for its scenic mountain backdrop, historic lakeside towns, and popular boating and water sports.
-
D.
Lake Brienz
Lake Brienz is a deep, turquoise-colored alpine lake in central Switzerland, renowned for its dramatic mountain scenery and crystal-clear waters.
-
E.
Lake Sarnen
Lake Sarnen is a scenic alpine lake in the canton of Obwalden in central Switzerland, known for its clear waters and surrounding mountain landscapes.
- 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: Greifensee (lake) Target entity description: Greifensee is a small glacial lake in the Canton of Zürich in Switzerland, known for its scenic surroundings, nature reserves, and recreational activities such as boating and hiking.
-
A.
Lake Pfäffikon (Bern)
Lake Pfäffikon (Bern) is a small lake in the canton of Bern, Switzerland, situated within the Aare river’s drainage basin and known for its natural surroundings and local recreation.
-
B.
Lake Zurich
Lake Zurich is a picturesque glacial lake in Switzerland, bordered by the city of Zurich and known for its recreational activities, scenic promenades, and surrounding alpine landscapes.
-
C.
Lake Thun
Lake Thun is a large alpine lake in the Bernese Oberland region of Switzerland, renowned for its scenic mountain backdrop, historic lakeside towns, and popular boating and water sports.
-
D.
Lake Brienz
Lake Brienz is a deep, turquoise-colored alpine lake in central Switzerland, renowned for its dramatic mountain scenery and crystal-clear waters.
-
E.
Lake Sarnen
Lake Sarnen is a scenic alpine lake in the canton of Obwalden in central Switzerland, known for its clear waters and surrounding mountain landscapes.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
glacial lake
ⓘ
lake in Switzerland ⓘ |
| averageDepth | about 18 metres ⓘ |
| basinCountry | Switzerland ⓘ |
| country | Switzerland ⓘ |
| formedBy | glacial activity during the last Ice Age ⓘ |
| hasFauna |
fish species such as pike and perch
ⓘ
migratory birds ⓘ waterfowl ⓘ |
| hasFlora |
aquatic plants
ⓘ
riparian vegetation ⓘ |
| hasProtectedArea |
Greifensee nature reserve
ⓘ
Greifensee–Lützelsee protected landscape ⓘ
linked to:
Greifensee nature reserve
|
| hasRegulation |
motorboats largely restricted
ⓘ
shoreline mostly protected from development ⓘ |
| hasUse |
fishing
ⓘ
local drinking water supply ⓘ nature conservation ⓘ recreation ⓘ |
| inflow |
Aabach (Greifensee)
ⓘ
Ustermer Aa ⓘ |
| knownFor |
birdwatching
ⓘ
cycling paths ⓘ hiking trails ⓘ jogging and running routes ⓘ nature reserves ⓘ recreational boating ⓘ scenic surroundings ⓘ |
| length | about 6 kilometres ⓘ |
| locatedIn |
Canton of Zürich
ⓘ
Greifensee–Pfannenstiel region ⓘ
linked to:
Lake Zürich region
Zurich Oberland ⓘ
linked to:
Zurich Oberland region
|
| locatedInTimeZone |
Central European Summer Time
ⓘ
Central European Time ⓘ |
| locatedNear |
city of Zürich
ⓘ
municipality of Fällanden ⓘ municipality of Greifensee ⓘ municipality of Maur ⓘ municipality of Mönchaltorf ⓘ municipality of Niederuster ⓘ town of Uster ⓘ
linked to:
Uster
|
| maximumDepth | about 32 metres ⓘ |
| outflow |
Glatt (river)
ⓘ
linked to:
Glatt river basin
|
| partOf | Glatt river basin ⓘ |
| surfaceArea | 8.45 square kilometres ⓘ |
| surfaceElevation | 435 metres above sea level ⓘ |
| surroundedBy |
forests
ⓘ
reed beds ⓘ wetlands ⓘ |
| width | about 1.6 kilometres ⓘ |
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: Greifensee (lake) Description of subject: Greifensee is a small glacial lake in the Canton of Zürich in Switzerland, known for its scenic surroundings, nature reserves, and recreational activities such as boating and hiking.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Greifensee (lake)
linked to: Greifensee (lake)
linked to: Greifensee (lake)
linked to: Greifensee (lake)
linked to: Greifensee (lake)
linked to: Greifensee (lake)
linked to: Greifensee (lake)
linked to: Greifensee (lake)