Gotthard Rail Tunnel (northern portal)
E705613
The Gotthard Rail Tunnel (northern portal) is the northern entrance of the historic Alpine railway tunnel that carries trains beneath the Gotthard massif in central Switzerland.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Gotthard Base Tunnel (northern portal) | 1 |
| Gotthard Rail Tunnel (northern portal) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7851098 — 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: Gotthard Rail Tunnel (northern portal) Context triple: [canton of Uri, contains, Gotthard Rail Tunnel (northern portal)]
-
A.
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.
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B.
Zimmerberg Base Tunnel
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.
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C.
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.
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D.
Jungfrau Railway tunnel
The Jungfrau Railway tunnel is a high-altitude railway passage through the Eiger in the Swiss Alps that carries trains up to the Jungfraujoch, often called the "Top of Europe."
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E.
Lötschberg Tunnel
The Lötschberg Tunnel is a major Swiss railway tunnel through the Bernese Alps that provides a key north–south transit route between the cantons of Bern and Valais.
- 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: Gotthard Rail Tunnel (northern portal) Target entity description: The Gotthard Rail Tunnel (northern portal) is the northern entrance of the historic Alpine railway tunnel that carries trains beneath the Gotthard massif in central Switzerland.
-
A.
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.
-
B.
Zimmerberg Base Tunnel
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.
-
C.
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.
-
D.
Jungfrau Railway tunnel
The Jungfrau Railway tunnel is a high-altitude railway passage through the Eiger in the Swiss Alps that carries trains up to the Jungfraujoch, often called the "Top of Europe."
-
E.
Lötschberg Tunnel
The Lötschberg Tunnel is a major Swiss railway tunnel through the Bernese Alps that provides a key north–south transit route between the cantons of Bern and Valais.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
railway infrastructure
ⓘ
railway tunnel portal ⓘ |
| belongsToNetwork | Swiss Federal Railways network NERFINISHED ⓘ |
| connectedTo | Gotthard Rail Tunnel (southern portal) NERFINISHED ⓘ |
| constructionMaterial |
concrete
ⓘ
masonry ⓘ |
| country | Switzerland ⓘ |
| electrification | overhead line ⓘ |
| gauge | standard gauge ⓘ |
| hasCoordinateSystem | WGS84 ⓘ |
| hasFunction | access point to Gotthard Rail Tunnel ⓘ |
| heritageStatus | part of historically important Swiss railway infrastructure ⓘ |
| historicalSignificance | entrance of one of the first major Alpine base tunnels for railways ⓘ |
| isEntranceOf | historic Alpine railway tunnel ⓘ |
| isPartOfRoute | north–south trans-Alpine rail corridor NERFINISHED ⓘ |
| locatedAt | northern end of Gotthard Rail Tunnel ⓘ |
| locatedIn |
Switzerland
ⓘ
canton of Uri ⓘ central Switzerland NERFINISHED ⓘ |
| locatedInMountainRegion | Alps NERFINISHED ⓘ |
| locatedInOrNear | Göschenen NERFINISHED ⓘ |
| locatedNear |
Gotthard road tunnel northern portal
NERFINISHED
ⓘ
Reuss valley NERFINISHED ⓘ |
| locatedOn | north side of Gotthard massif ⓘ |
| locatedUnder | Gotthard massif NERFINISHED ⓘ |
| openingYear | 1882 ⓘ |
| operator | Swiss Federal Railways NERFINISHED ⓘ |
| owner | Swiss Federal Railways NERFINISHED ⓘ |
| partOf |
Gotthard Rail Tunnel
NERFINISHED
ⓘ
Gotthard railway NERFINISHED ⓘ |
| railwayLine | Gotthard line NERFINISHED ⓘ |
| serves | Gotthard railway line NERFINISHED ⓘ |
| usedFor |
freight trains
ⓘ
passenger trains ⓘ rail transport ⓘ |
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: Gotthard Rail Tunnel (northern portal) Description of subject: The Gotthard Rail Tunnel (northern portal) is the northern entrance of the historic Alpine railway tunnel that carries trains beneath the Gotthard massif in central Switzerland.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Gotthard Base Tunnel (northern portal)