Metropolitan line
E61513
The Metropolitan line is one of the oldest lines of the London Underground, running from central London into the northwestern suburbs and beyond.
All labels observed (12)
How this entity was disambiguated
This entity first appeared as the object of triple T474792 — 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: Metropolitan line Context triple: [London Underground, hasPart, Metropolitan line]
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A.
Bury Line
The Bury Line is a light rail route on Greater Manchester's Metrolink network that connects central Manchester with the town of Bury to the north.
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B.
District line
The District line is a major London Underground service running across central and western London, known for its green color on the Tube map and extensive coverage of suburban areas.
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C.
Hammersmith & City line
The Hammersmith & City line is a London Underground service running across west and central London, linking Hammersmith to Barking via key hubs such as Paddington, King's Cross St Pancras, and Liverpool Street.
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D.
Bakerloo line
The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
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E.
Cross-City Line
The Cross-City Line is a suburban railway route in the West Midlands of England that runs through Birmingham, connecting Lichfield in the north to Redditch and Bromsgrove in the south.
- 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: Metropolitan line Target entity description: The Metropolitan line is one of the oldest lines of the London Underground, running from central London into the northwestern suburbs and beyond.
-
A.
Bury Line
The Bury Line is a light rail route on Greater Manchester's Metrolink network that connects central Manchester with the town of Bury to the north.
-
B.
District line
The District line is a major London Underground service running across central and western London, known for its green color on the Tube map and extensive coverage of suburban areas.
-
C.
Hammersmith & City line
The Hammersmith & City line is a London Underground service running across west and central London, linking Hammersmith to Barking via key hubs such as Paddington, King's Cross St Pancras, and Liverpool Street.
-
D.
Bakerloo line
The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
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E.
Cross-City Line
The Cross-City Line is a suburban railway route in the West Midlands of England that runs through Birmingham, connecting Lichfield in the north to Redditch and Bromsgrove in the south.
- F. None of above. chosen
Statements (50)
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: Metropolitan line Description of subject: The Metropolitan line is one of the oldest lines of the London Underground, running from central London into the northwestern suburbs and beyond.
Referenced by (75)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Metropolitan line between Aldgate and Amersham
this entity surface form:
Metropolitan line between Aldgate and Uxbridge
this entity surface form:
Metropolitan line between Aldgate and Watford
this entity surface form:
Metropolitan line outer suburban section
this entity surface form:
Metropolitan line trains to Amersham
this entity surface form:
Metropolitan line Aylesbury services (National Rail beyond Amersham)
this entity surface form:
Metropolitan line of the London Underground
this entity surface form:
London Underground Metropolitan line semi-fast services