Macdonald-Cartier Bridge
E235822
The Macdonald-Cartier Bridge is a major road bridge spanning the Ottawa River, linking the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Macdonald-Cartier Bridge canonical | 3 |
| Macdonald–Cartier Bridge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1873666 — 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: Macdonald-Cartier Bridge Context triple: [Gatineau, riverCrossingConnection, Macdonald-Cartier Bridge]
-
A.
Confederation Bridge
Confederation Bridge is a long-span bridge in eastern Canada that carries the Trans-Canada Highway across the Northumberland Strait, linking Prince Edward Island to the mainland province of New Brunswick.
-
B.
Chaudière Bridge
Chaudière Bridge is a historic bridge spanning the Ottawa River that connects the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
-
C.
Algonquin Bridge
Algonquin Bridge is a pedestrian bridge located on the Toronto Islands, providing a scenic crossing between parts of the island park system.
-
D.
Gordie Howe International Bridge
The Gordie Howe International Bridge is a major cable-stayed border crossing under construction between Windsor, Ontario, and Detroit, Michigan, intended to improve trade and travel between Canada and the United States.
-
E.
Portage Bridge
Portage Bridge is a major bridge spanning the Ottawa River, connecting the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
- 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: Macdonald-Cartier Bridge Target entity description: The Macdonald-Cartier Bridge is a major road bridge spanning the Ottawa River, linking the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
-
A.
Confederation Bridge
Confederation Bridge is a long-span bridge in eastern Canada that carries the Trans-Canada Highway across the Northumberland Strait, linking Prince Edward Island to the mainland province of New Brunswick.
-
B.
Chaudière Bridge
Chaudière Bridge is a historic bridge spanning the Ottawa River that connects the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
-
C.
Algonquin Bridge
Algonquin Bridge is a pedestrian bridge located on the Toronto Islands, providing a scenic crossing between parts of the island park system.
-
D.
Gordie Howe International Bridge
The Gordie Howe International Bridge is a major cable-stayed border crossing under construction between Windsor, Ontario, and Detroit, Michigan, intended to improve trade and travel between Canada and the United States.
-
E.
Portage Bridge
Portage Bridge is a major bridge spanning the Ottawa River, connecting the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
interprovincial bridge
ⓘ
road bridge ⓘ steel girder bridge ⓘ |
| carries |
bicycles
ⓘ
motor vehicles ⓘ pedestrians ⓘ |
| connects |
Gatineau
ⓘ
surface form:
Gatineau, Quebec
Ottawa ⓘ
surface form:
Ottawa, Ontario
|
| constructionStartDate | 1963 ⓘ |
| coordinates | approximately 45.435°N 75.695°W ⓘ |
| country | Canada ⓘ |
| crosses | Ottawa River ⓘ |
| crossesBetween |
Lower Town, Ottawa
ⓘ
downtown Gatineau ⓘ |
| deckType | roadway deck ⓘ |
| designedFor | year-round use ⓘ |
| followedBy | Chaudière Bridge ⓘ |
| hasExpansionJoints | yes ⓘ |
| hasLighting | yes ⓘ |
| hasPiersInWater | yes ⓘ |
| hasSidewalks | yes ⓘ |
| hasSpeedLimit | yes ⓘ |
| hasToll | no ⓘ |
| isOneOf | interprovincial bridges over the Ottawa River ⓘ |
| isPartOf | federal bridge network in the National Capital Region ⓘ |
| length | approximately 1.3 kilometres ⓘ |
| locatedIn | National Capital Region ⓘ |
| locatedInProvince |
Ontario
ⓘ
Quebec, Canada ⓘ
surface form:
Quebec
|
| maintainedBy | Public Services and Procurement Canada ⓘ |
| material | steel ⓘ |
| namedAfter |
George-Étienne Cartier
ⓘ
John A. Macdonald ⓘ |
| namedFor | Canadian Confederation leaders ⓘ |
| numberOfLanes | 6 ⓘ |
| opened | 1965 ⓘ |
| owner |
Canadian federal government (Ottawa)
ⓘ
surface form:
Government of Canada
|
| partOf |
Highway 5 (Quebec)
ⓘ
King Edward Avenue (Ottawa) ⓘ |
| passesOver | Ottawa River navigation channel ⓘ |
| precededBy | Alexandra Bridge ⓘ |
| regionServed | Ottawa–Gatineau metropolitan area ⓘ |
| riverKilometre | near Chaudière Falls area of Ottawa River ⓘ |
| servesAs | major commuter route between Ottawa and Gatineau ⓘ |
| speedLimit | typically 70 km/h ⓘ |
| trafficType | road traffic ⓘ |
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: Macdonald-Cartier Bridge Description of subject: The Macdonald-Cartier Bridge is a major road bridge spanning the Ottawa River, linking the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Macdonald–Cartier Bridge