Albula Tunnel
E710876
The Albula Tunnel is a historic Swiss railway tunnel in the Alps, renowned for its engineering significance and role in the UNESCO-listed Albula/Bernina railway line.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Albula Tunnel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7875740 — 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: Albula Tunnel Context triple: [Rhaetian Railway, hasNotableStructure, Albula Tunnel]
-
A.
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.
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B.
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.
-
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.
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D.
Ceneri Base Tunnel
The Ceneri Base Tunnel is a major Swiss railway tunnel through the Ceneri massif that forms a key part of the New Railway Link through the Alps, improving north–south transit between central Switzerland and the canton of Ticino.
-
E.
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."
- 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: Albula Tunnel Target entity description: The Albula Tunnel is a historic Swiss railway tunnel in the Alps, renowned for its engineering significance and role in the UNESCO-listed Albula/Bernina railway line.
-
A.
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.
-
B.
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.
-
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.
Ceneri Base Tunnel
The Ceneri Base Tunnel is a major Swiss railway tunnel through the Ceneri massif that forms a key part of the New Railway Link through the Alps, improving north–south transit between central Switzerland and the canton of Ticino.
-
E.
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."
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
railway tunnel
ⓘ
transport infrastructure ⓘ |
| connects |
Preda
NERFINISHED
ⓘ
Spinas NERFINISHED ⓘ |
| constructionMethod | drill and blast ⓘ |
| constructionStartDate |
1898
ⓘ
2014 ⓘ |
| country | Switzerland ⓘ |
| electrification | 11 kV 16.7 Hz AC overhead line ⓘ |
| elevationAtNorthPortal | about 1789 metres above sea level ⓘ |
| elevationAtSouthPortal | about 1815 metres above sea level ⓘ |
| gauge | metre gauge ⓘ |
| hasPortal |
Preda north portal
NERFINISHED
ⓘ
Spinas south portal NERFINISHED ⓘ |
| hasSuccessorStructure | Albula Tunnel II NERFINISHED ⓘ |
| heritageDesignationYear | 2008 ⓘ |
| heritageStatus | part of UNESCO World Heritage Site Rhaetian Railway in the Albula/Bernina Landscapes ⓘ |
| length | approximately 5866 metres ⓘ |
| locatedIn |
Alps
NERFINISHED
ⓘ
Canton of Graubünden NERFINISHED ⓘ |
| locatedNear |
Albula Pass
NERFINISHED
ⓘ
Bergün Filisur NERFINISHED ⓘ Bever NERFINISHED ⓘ |
| locatedOn | route between Thusis and St. Moritz ⓘ |
| material | rock ⓘ |
| notableFor |
Alpine railway engineering
ⓘ
historic mountain railway construction ⓘ |
| openingDate |
1903
ⓘ
2022 ⓘ |
| operator |
Rhaetian Railway
NERFINISHED
ⓘ
Rhaetian Railway NERFINISHED ⓘ |
| partOf |
Albula Railway
NERFINISHED
ⓘ
Albula Railway NERFINISHED ⓘ Albula/Bernina railway line NERFINISHED ⓘ Rhaetian Railway network NERFINISHED ⓘ |
| purpose | replacement for original Albula Tunnel ⓘ |
| railwayLine | Albula line NERFINISHED ⓘ |
| railwaySystem | Rhaetian Railway NERFINISHED ⓘ |
| region |
Albula Valley
NERFINISHED
ⓘ
Engadin NERFINISHED ⓘ |
| status | in operation ⓘ |
| trackConfiguration | single track ⓘ |
| UNESCOWorldHeritageSite | Rhaetian Railway in the Albula/Bernina Landscapes NERFINISHED ⓘ |
| usedBy |
Bernina Express (portion of route)
NERFINISHED
ⓘ
Glacier Express NERFINISHED ⓘ freight trains ⓘ 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: Albula Tunnel Description of subject: The Albula Tunnel is a historic Swiss railway tunnel in the Alps, renowned for its engineering significance and role in the UNESCO-listed Albula/Bernina railway line.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.