Mount Macdonald Tunnel
E803556
Mount Macdonald Tunnel is a major railway tunnel in British Columbia, Canada, that carries Canadian Pacific Railway trains through the Selkirk Mountains as part of a key transcontinental route.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mount Macdonald Tunnel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9490898 — 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: Mount Macdonald Tunnel Context triple: [Canadian Pacific Railway, notableStructure, Mount Macdonald Tunnel]
-
A.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
-
B.
George Massey Tunnel
The George Massey Tunnel is a highway traffic tunnel in British Columbia, Canada, that carries vehicles beneath the Fraser River between Richmond and Delta.
-
C.
Bopeep Tunnel
Bopeep Tunnel is a railway tunnel in East Sussex, England, carrying the Tonbridge–Hastings line through the coastal cliffs near St Leonards.
-
D.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
E.
Anton Anderson Memorial Tunnel
The Anton Anderson Memorial Tunnel is a combined rail and highway tunnel in Alaska that provides the only road access to the town of Whittier through the Chugach Mountains.
- 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: Mount Macdonald Tunnel Target entity description: Mount Macdonald Tunnel is a major railway tunnel in British Columbia, Canada, that carries Canadian Pacific Railway trains through the Selkirk Mountains as part of a key transcontinental route.
-
A.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
-
B.
George Massey Tunnel
The George Massey Tunnel is a highway traffic tunnel in British Columbia, Canada, that carries vehicles beneath the Fraser River between Richmond and Delta.
-
C.
Bopeep Tunnel
Bopeep Tunnel is a railway tunnel in East Sussex, England, carrying the Tonbridge–Hastings line through the coastal cliffs near St Leonards.
-
D.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
E.
Anton Anderson Memorial Tunnel
The Anton Anderson Memorial Tunnel is a combined rail and highway tunnel in Alaska that provides the only road access to the town of Whittier through the Chugach Mountains.
- F. None of above. chosen
Statements (26)
| Predicate | Object |
|---|---|
| instanceOf |
rail infrastructure
ⓘ
railway tunnel ⓘ |
| constructionStartDate | 1984 ⓘ |
| country | Canada ⓘ |
| crosses | Rogers Pass area NERFINISHED ⓘ |
| electrification | not electrified ⓘ |
| gauge | standard gauge ⓘ |
| locatedIn |
British Columbia
ⓘ
Selkirk Mountains NERFINISHED ⓘ |
| locatedInMountainRange | Selkirk Mountains NERFINISHED ⓘ |
| locatedNear | Rogers Pass NERFINISHED ⓘ |
| namedAfter | Mount Macdonald NERFINISHED ⓘ |
| openingDate | 1988 ⓘ |
| operator | Canadian Pacific Railway NERFINISHED ⓘ |
| owner | Canadian Pacific Railway NERFINISHED ⓘ |
| partOf |
Canadian Pacific Railway main line
NERFINISHED
ⓘ
transcontinental rail route ⓘ |
| purpose |
freight rail traffic
ⓘ
transcontinental rail traffic ⓘ |
| railwayLineUsed | Canadian Pacific Railway NERFINISHED ⓘ |
| region | Columbia Mountains NERFINISHED ⓘ |
| significance |
key link in Canadian Pacific Railway transcontinental route
ⓘ
major rail tunnel in western Canada ⓘ |
| trackConfiguration | single track ⓘ |
| usedFor |
heavy freight trains
ⓘ
long-distance 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: Mount Macdonald Tunnel Description of subject: Mount Macdonald Tunnel is a major railway tunnel in British Columbia, Canada, that carries Canadian Pacific Railway trains through the Selkirk Mountains as part of a key transcontinental route.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.