Sarner Aa
E634667
Sarner Aa is a river in central Switzerland that drains Lake Sarnen and flows through the canton of Obwalden before reaching Lake Lucerne.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Sarner Aa canonical | 10 |
| Sarner Aa river system | 2 |
| Sarner Aa (German) | 1 |
| Sarner Aa river | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7001737 — 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: Sarner Aa Context triple: [Lake Lucerne, inflow, Sarner Aa]
-
A.
Aare
The Aare is Switzerland’s longest entirely domestic river, flowing through major cities like Bern and feeding several lakes before joining the Rhine.
-
B.
Bissone
Bissone is a small Swiss municipality on the shores of Lake Lugano in the canton of Ticino, known for its picturesque lakeside setting and historic village center.
-
C.
Samedan
Samedan is a Swiss alpine town in the Upper Engadine region of the canton of Graubünden, known for its role as a transport hub and its proximity to major ski and tourist destinations.
-
D.
Lütschine
The Lütschine is a river in the Bernese Oberland region of Switzerland, known for flowing through the Lauterbrunnen and Grindelwald valleys before joining the Aare near Interlaken.
-
E.
River Reuss
The River Reuss is a major Swiss river that flows from the Gotthard region through cities such as Lucerne before joining the Aare.
- 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: Sarner Aa Target entity description: Sarner Aa is a river in central Switzerland that drains Lake Sarnen and flows through the canton of Obwalden before reaching Lake Lucerne.
-
A.
Aare
The Aare is Switzerland’s longest entirely domestic river, flowing through major cities like Bern and feeding several lakes before joining the Rhine.
-
B.
Bissone
Bissone is a small Swiss municipality on the shores of Lake Lugano in the canton of Ticino, known for its picturesque lakeside setting and historic village center.
-
C.
Samedan
Samedan is a Swiss alpine town in the Upper Engadine region of the canton of Graubünden, known for its role as a transport hub and its proximity to major ski and tourist destinations.
-
D.
Lütschine
The Lütschine is a river in the Bernese Oberland region of Switzerland, known for flowing through the Lauterbrunnen and Grindelwald valleys before joining the Aare near Interlaken.
-
E.
River Reuss
The River Reuss is a major Swiss river that flows from the Gotthard region through cities such as Lucerne before joining the Aare.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Switzerland ⓘ |
| country | Switzerland ⓘ |
| drainageBasin | Lake Sarnen basin ⓘ |
| drains | Lake Sarnen ⓘ |
| flowsDirection | generally northward ⓘ |
| flowsInto | Lake Lucerne ⓘ |
| flowsThrough |
Sarneraatal
ⓘ
linked to:
Sarneraa
|
| hasMajorLakeAlongCourse |
Alpnachersee
ⓘ
Lake Sarnen ⓘ Wichelsee ⓘ |
| hasMouthElevation | about 434 metres above sea level ⓘ |
| hasNameInLanguage |
Sarner Aa (German)
ⓘ
linked to:
Sarner Aa
|
| hasSourceElevation | about 470 metres above sea level ⓘ |
| locatedIn |
Central Switzerland
ⓘ
canton of Obwalden ⓘ |
| mouthLocation |
Alpnachersee
ⓘ
southern arm of Lake Lucerne ⓘ |
| mouthOf | Lake Lucerne ⓘ |
| partOf | Reuss river basin ⓘ |
| passesThrough |
Alpnach
ⓘ
Kerns ⓘ Sachseln ⓘ Sarnen ⓘ |
| region | Alps ⓘ |
| sourceRegion |
Obwalden
ⓘ
linked to:
Obwalden district
|
| tributaryOf | Lake Lucerne ⓘ |
| usedFor |
flood protection infrastructure
ⓘ
hydropower ⓘ |
| watercourseType | mountain 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: Sarner Aa Description of subject: Sarner Aa is a river in central Switzerland that drains Lake Sarnen and flows through the canton of Obwalden before reaching Lake Lucerne.
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sarner Aa
linked to: Sarner Aa
linked to: Sarner Aa