Mont d’Ambin Base Tunnel
E682909
The Mont d’Ambin Base Tunnel is a major transalpine railway tunnel under construction between France and Italy, designed to provide a low-gradient, high-capacity route for high-speed and freight trains through the Alps.
All labels observed (3)
| Label | Occurrences |
|---|---|
| French name "Tunnel de base du Mont d’Ambin" | 1 |
| Italian name "Tunnel di base del Moncenisio" | 1 |
| Mont d’Ambin Base Tunnel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7701398 — 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: Mont d’Ambin Base Tunnel Context triple: [Lyon–Turin rail axis, hasPart, Mont d’Ambin Base Tunnel]
-
A.
Great St Bernard Tunnel
The Great St Bernard Tunnel is a major road tunnel through the Alps that provides a year-round transalpine route between Switzerland and Italy beneath the Great St Bernard Pass.
-
B.
Mont Blanc Tunnel
The Mont Blanc Tunnel is a major trans-Alpine road tunnel linking France and Italy beneath the Mont Blanc massif, serving as a key route for international traffic through the Alps.
-
C.
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.
-
D.
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.
-
E.
Sela Tunnel
Sela Tunnel is a high-altitude road tunnel in Arunachal Pradesh, India, built to provide all-weather connectivity to the Tawang region near the India-China border.
- 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: Mont d’Ambin Base Tunnel Target entity description: The Mont d’Ambin Base Tunnel is a major transalpine railway tunnel under construction between France and Italy, designed to provide a low-gradient, high-capacity route for high-speed and freight trains through the Alps.
-
A.
Great St Bernard Tunnel
The Great St Bernard Tunnel is a major road tunnel through the Alps that provides a year-round transalpine route between Switzerland and Italy beneath the Great St Bernard Pass.
-
B.
Mont Blanc Tunnel
The Mont Blanc Tunnel is a major trans-Alpine road tunnel linking France and Italy beneath the Mont Blanc massif, serving as a key route for international traffic through the Alps.
-
C.
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.
-
D.
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.
-
E.
Sela Tunnel
Sela Tunnel is a high-altitude road tunnel in Arunachal Pradesh, India, built to provide all-weather connectivity to the Tawang region near the India-China border.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
railway tunnel
ⓘ
transalpine tunnel ⓘ |
| connects |
France
ⓘ
Italy ⓘ |
| country |
France
ⓘ
Italy ⓘ |
| crossesBorderBetween |
France
ⓘ
Italy ⓘ |
| designFeature |
high capacity
ⓘ
low gradient ⓘ |
| gauge | standard gauge ⓘ |
| hasLanguageVariant |
French name "Tunnel de base du Mont d’Ambin"
ⓘ
linked to:
Mont d’Ambin Base Tunnel
Italian name "Tunnel di base del Moncenisio" ⓘ
linked to:
Mont d’Ambin Base Tunnel
|
| infrastructureType | transalpine rail infrastructure ⓘ |
| locatedIn |
Alps
ⓘ
Western Alps ⓘ |
| operatorProject | Lyon Turin Ferroviaire ⓘ |
| partOf |
Lyon–Turin rail link
ⓘ
linked to:
Lyon–Turin rail axis
Lyon–Turin railway ⓘ
linked to:
Lyon–Turin rail axis
|
| passesUnder | Mont d’Ambin massif ⓘ |
| purpose |
freight rail
ⓘ
high-speed rail ⓘ rail transport ⓘ |
| railwayUsage |
freight trains
ⓘ
mixed traffic ⓘ passenger trains ⓘ |
| region |
Piedmont
ⓘ
Savoie ⓘ |
| status | under construction ⓘ |
| transportMode | rail ⓘ |
| tunnelType | railway base tunnel ⓘ |
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: Mont d’Ambin Base Tunnel Description of subject: The Mont d’Ambin Base Tunnel is a major transalpine railway tunnel under construction between France and Italy, designed to provide a low-gradient, high-capacity route for high-speed and freight trains through the Alps.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mont d’Ambin Base Tunnel
linked to: Mont d’Ambin Base Tunnel