Furka Base Tunnel
E409969
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Furka Base Tunnel canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T4062056 — 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: Furka Base Tunnel Context triple: [Matterhorn Gotthard Bahn, routePassesThrough, Furka Base Tunnel]
-
A.
Kanmon Tunnel
The Kanmon Tunnel is an undersea railway and road tunnel in Japan that links the islands of Honshu and Kyushu beneath the Kanmon Straits.
-
B.
Salang Tunnel
The Salang Tunnel is a strategic highway tunnel in Afghanistan that passes through the Hindu Kush mountains, providing a vital north–south transport link between Kabul and the northern provinces.
-
C.
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.
-
D.
Roki Tunnel
Roki Tunnel is a strategic road tunnel through the Caucasus Mountains that serves as a key transport link between Russia and the breakaway region of South Ossetia in Georgia.
-
E.
Wawona Tunnel
Wawona Tunnel is a historic highway tunnel in Yosemite National Park that serves as the dramatic western gateway to the famous Tunnel View overlook of Yosemite Valley.
- 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: Furka Base Tunnel Target entity description: 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.
-
A.
Kanmon Tunnel
The Kanmon Tunnel is an undersea railway and road tunnel in Japan that links the islands of Honshu and Kyushu beneath the Kanmon Straits.
-
B.
Salang Tunnel
The Salang Tunnel is a strategic highway tunnel in Afghanistan that passes through the Hindu Kush mountains, providing a vital north–south transport link between Kabul and the northern provinces.
-
C.
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.
-
D.
Roki Tunnel
Roki Tunnel is a strategic road tunnel through the Caucasus Mountains that serves as a key transport link between Russia and the breakaway region of South Ossetia in Georgia.
-
E.
Wawona Tunnel
Wawona Tunnel is a historic highway tunnel in Yosemite National Park that serves as the dramatic western gateway to the famous Tunnel View overlook of Yosemite Valley.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
base tunnel
ⓘ
railway tunnel ⓘ |
| altitudeCharacteristic | low-level route compared to Furka summit line ⓘ |
| connects |
Oberwald
ⓘ
Realp ⓘ |
| constructionMethod | drill and blast ⓘ |
| constructionStart | 1973 ⓘ |
| country | Switzerland ⓘ |
| crosses | Alpine watershed between Rhine and Rhone basins ⓘ |
| electrification | 11 kV 16.7 Hz AC overhead line ⓘ |
| gauge | metre gauge ⓘ |
| hasPortal |
Oberwald portal
ⓘ
linked to:
Oberwald
Realp portal ⓘ
linked to:
Realp
|
| hasTraffic |
car shuttle trains
ⓘ
freight trains ⓘ passenger trains ⓘ |
| improves | reliability of east–west rail connection in Upper Valais and Uri ⓘ |
| length | approximately 15.4 kilometres ⓘ |
| lineOwnerChange | became part of Matterhorn Gotthard Bahn in 2003 merger ⓘ |
| locatedIn |
Swiss Alps
ⓘ
canton of Uri ⓘ canton of Valais ⓘ
linked to:
Canton of Valais
|
| locatedNear |
Oberwald railway station
ⓘ
Realp railway station ⓘ |
| locatedOn | route between Andermatt and Brig ⓘ |
| opened | 1982 ⓘ |
| operator | Matterhorn Gotthard Bahn ⓘ |
| owner | Matterhorn Gotthard Bahn ⓘ |
| partOf |
Matterhorn Gotthard Bahn network
ⓘ
linked to:
Matterhorn Gotthard Bahn
transalpine rail corridor in central Switzerland ⓘ |
| passesUnder | Furka Pass ⓘ |
| previousOwner |
Furka–Oberalp Bahn
ⓘ
linked to:
Furka–Oberalp line
|
| purpose | all-weather rail route under Furka Pass ⓘ |
| railwayLine | Furka–Oberalp line ⓘ |
| reduced | vulnerability to winter closures compared to summit route ⓘ |
| replaced | Furka Summit line as year-round route ⓘ |
| safetyFeature |
equipped with emergency exits
ⓘ
equipped with ventilation system ⓘ |
| status | in operation ⓘ |
| trackConfiguration | single track ⓘ |
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: Furka Base Tunnel Description of subject: 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.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.