Zimmerberg Base Tunnel
E557865
The Zimmerberg Base Tunnel is a major Swiss railway tunnel that provides a fast, low-gradient route for passenger and freight trains between Zurich and central Switzerland.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Zimmerberg Base Tunnel canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5830302 — 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: Zimmerberg Base Tunnel Context triple: [Swiss railway network, includes, Zimmerberg Base Tunnel]
-
A.
Gotthard Base Tunnel
The Gotthard Base Tunnel is a 57-kilometer railway tunnel beneath the Swiss Alps, renowned as one of the world’s longest and deepest traffic tunnels, designed to improve high-speed rail connectivity across Europe.
-
B.
Milchbuck tunnel
The Milchbuck Tunnel is a road tunnel in Zürich, Switzerland, carrying traffic beneath the Milchbuck district as part of the city's inner ring road network.
-
C.
Gotthard Road Tunnel
The Gotthard Road Tunnel is a major Swiss Alpine tunnel and one of Europe’s key north–south road links, carrying traffic beneath the Saint-Gotthard Massif.
-
D.
Furka Base Tunnel
The Furka Base Tunnel is a long railway tunnel in the Swiss Alps that provides an all-weather, low-level route beneath the Furka Pass, improving connectivity and reliability on the Matterhorn Gotthard Bahn line.
-
E.
Simplon Tunnel
The Simplon Tunnel is a major railway tunnel beneath the Alps connecting Switzerland and Italy, historically significant as one of the longest and most important transalpine rail routes.
- 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: Zimmerberg Base Tunnel Target entity description: The Zimmerberg Base Tunnel is a major Swiss railway tunnel that provides a fast, low-gradient route for passenger and freight trains between Zurich and central Switzerland.
-
A.
Gotthard Base Tunnel
The Gotthard Base Tunnel is a 57-kilometer railway tunnel beneath the Swiss Alps, renowned as one of the world’s longest and deepest traffic tunnels, designed to improve high-speed rail connectivity across Europe.
-
B.
Milchbuck tunnel
The Milchbuck Tunnel is a road tunnel in Zürich, Switzerland, carrying traffic beneath the Milchbuck district as part of the city's inner ring road network.
-
C.
Gotthard Road Tunnel
The Gotthard Road Tunnel is a major Swiss Alpine tunnel and one of Europe’s key north–south road links, carrying traffic beneath the Saint-Gotthard Massif.
-
D.
Furka Base Tunnel
The Furka Base Tunnel is a long railway tunnel in the Swiss Alps that provides an all-weather, low-level route beneath the Furka Pass, improving connectivity and reliability on the Matterhorn Gotthard Bahn line.
-
E.
Simplon Tunnel
The Simplon Tunnel is a major railway tunnel beneath the Alps connecting Switzerland and Italy, historically significant as one of the longest and most important transalpine rail routes.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf | railway tunnel ⓘ |
| connects |
Thalwil
ⓘ
Zurich ⓘ central Switzerland ⓘ |
| continent | Europe ⓘ |
| country | Switzerland ⓘ |
| electrification | overhead line ⓘ |
| endPoint | Thalwil ⓘ |
| function |
freight transport
ⓘ
passenger transport ⓘ |
| hasGradient | low gradient ⓘ |
| hasLanguageOfLocation | German ⓘ |
| locatedIn |
Zimmerberg region
ⓘ
canton of Zurich ⓘ |
| locatedNear | Lake Zurich ⓘ |
| locatedUnder | Zimmerberg mountain ridge ⓘ |
| operator | Swiss Federal Railways ⓘ |
| owner | Swiss Federal Railways ⓘ |
| partOf |
New Rail Link through the Alps
ⓘ
linked to:
New Railway Link through the Alps
Swiss rail network ⓘ |
| purpose |
increase capacity between Zurich and central Switzerland
ⓘ
provide flatter route for heavy trains ⓘ reduce travel time between Zurich and central Switzerland ⓘ |
| railwayLine | Zurich–Thalwil line ⓘ |
| startPoint | Zurich ⓘ |
| status | in operation ⓘ |
| trackGauge | standard gauge ⓘ |
| usedBy |
freight trains
ⓘ
long-distance passenger trains ⓘ regional passenger trains ⓘ |
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: Zimmerberg Base Tunnel Description of subject: The Zimmerberg Base Tunnel is a major Swiss railway tunnel that provides a fast, low-gradient route for passenger and freight trains between Zurich and central Switzerland.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.