M2
E262761
M2 is the second line of the Warsaw Metro, running east–west across the city and connecting key districts on both sides of the Vistula River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M2 canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T2400513 — 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: M2 Context triple: [Warsaw Metro, hasLine, M2]
-
A.
M2
M2 is a major British motorway that connects London with the port town of Dover in Kent, serving as an important route to the Channel ports.
-
B.
M2
M2 is a boat line that operates as part of Geneva’s public transport network, providing passenger services across the city’s waters.
-
C.
M3
M3 is a major motorway in the United Kingdom that connects London to Southampton, serving as a key route through southern England.
-
D.
M3
M3 is a boat line that operates as part of Geneva’s public transport network, providing passenger service across the city’s lake or waterways.
-
E.
M20
M20 is a major motorway in South East England connecting London to the Channel Tunnel and the port of Dover.
- 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: M2 Target entity description: M2 is the second line of the Warsaw Metro, running east–west across the city and connecting key districts on both sides of the Vistula River.
-
A.
M2
M2 is a major British motorway that connects London with the port town of Dover in Kent, serving as an important route to the Channel ports.
-
B.
M2
M2 is a boat line that operates as part of Geneva’s public transport network, providing passenger services across the city’s waters.
-
C.
M3
M3 is a major motorway in the United Kingdom that connects London to Southampton, serving as a key route through southern England.
-
D.
M3
M3 is a boat line that operates as part of Geneva’s public transport network, providing passenger service across the city’s lake or waterways.
-
E.
M20
M20 is a major motorway in South East England connecting London to the Channel Tunnel and the port of Dover.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
rapid transit line ⓘ |
| alsoKnownAs | second line of the Warsaw Metro ⓘ |
| cityServed | Warsaw ⓘ |
| connects |
districts on the left bank of the Vistula
ⓘ
districts on the right bank of the Vistula ⓘ |
| connectsWith | M1 ⓘ |
| country | Poland ⓘ |
| crosses | Vistula River ⓘ |
| electrification | third rail ⓘ |
| fareSystem | ZTM Warsaw ⓘ |
| hasDirection | east–west ⓘ |
| hasFunction | urban mass transit ⓘ |
| hasRouteOrientation | east–west axis through Warsaw ⓘ |
| hasTerminus |
eastern terminus in eastern Warsaw
ⓘ
western terminus in western Warsaw ⓘ |
| infrastructureType | underground railway ⓘ |
| isPartOf | urban rail in Warsaw ⓘ |
| lineNumber | 2 ⓘ |
| locatedIn |
Poland
ⓘ
Warsaw ⓘ |
| operator | Metro Warszawskie ⓘ |
| partOf | Warsaw Metro ⓘ |
| publicTransportNetwork | Warsaw public transport network ⓘ |
| serviceArea | key districts on both sides of the Vistula River ⓘ |
| system | Warsaw Metro ⓘ |
| trackGauge | standard gauge ⓘ |
| transportType | metro ⓘ |
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: M2 Description of subject: M2 is the second line of the Warsaw Metro, running east–west across the city and connecting key districts on both sides of the Vistula River.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.