London Buses route N21
E929112
London Buses route N21 is a night bus service in London that operates between central London and southeast suburbs, providing late-night transport for passengers traveling through areas such as London Bridge.
All labels observed (1)
| Label | Occurrences |
|---|---|
| London Buses route N21 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11495198 — 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: London Buses route N21 Context triple: [London Bridge bus station, servedByNightBusRoute, London Buses route N21]
-
A.
London bus route 281
London bus route 281 is a Transport for London bus service in southwest London that runs between Hounslow and Tolworth via Twickenham and Kingston.
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B.
London bus route 55
London bus route 55 is a Transport for London bus service that runs between Leyton and Oxford Circus, serving central and east London.
-
C.
London Buses route 196
London Buses route 196 is a Transport for London bus service in south London that runs between Elephant & Castle and Norwood, serving areas such as Kennington, Stockwell, and Brixton.
-
D.
London Buses route 77
London Buses route 77 is a Transport for London bus service in south London that runs between Waterloo and Tooting via key locations such as Vauxhall and Clapham.
-
E.
London Buses routes 185
London Buses route 185 is a Transport for London bus service that runs between Victoria and Lewisham in south London, serving key locations such as Denmark Hill and Camberwell.
- 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: London Buses route N21 Target entity description: London Buses route N21 is a night bus service in London that operates between central London and southeast suburbs, providing late-night transport for passengers traveling through areas such as London Bridge.
-
A.
London bus route 281
London bus route 281 is a Transport for London bus service in southwest London that runs between Hounslow and Tolworth via Twickenham and Kingston.
-
B.
London bus route 55
London bus route 55 is a Transport for London bus service that runs between Leyton and Oxford Circus, serving central and east London.
-
C.
London Buses route 196
London Buses route 196 is a Transport for London bus service in south London that runs between Elephant & Castle and Norwood, serving areas such as Kennington, Stockwell, and Brixton.
-
D.
London Buses route 77
London Buses route 77 is a Transport for London bus service in south London that runs between Waterloo and Tooting via key locations such as Vauxhall and Clapham.
-
E.
London Buses routes 185
London Buses route 185 is a Transport for London bus service that runs between Victoria and Lewisham in south London, serving key locations such as Denmark Hill and Camberwell.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
London bus route
ⓘ
night bus route ⓘ |
| connectsArea |
Central London
ⓘ
Southeast London suburbs ⓘ |
| country | United Kingdom ⓘ |
| fareSystem | London fare zones ⓘ |
| hasRouteType |
night route
ⓘ
urban route ⓘ |
| hasServiceClass | local bus service ⓘ |
| locatedIn |
London
ⓘ
linked to:
London, England
|
| modeOfTransport | bus ⓘ |
| operatedBy | London Buses ⓘ |
| operatedFor | Transport for London ⓘ |
| operatesAtTime | night ⓘ |
| operatorType | franchised bus operator under contract to Transport for London ⓘ |
| partOfNetwork |
London Buses network
ⓘ
linked to:
London Buses
|
| passesThrough |
Central London
ⓘ
London Bridge ⓘ |
| paymentMethod |
Oyster card
ⓘ
Travelcard ⓘ contactless payment card ⓘ |
| providesService | late-night transport ⓘ |
| regulatoryAuthority | Transport for London ⓘ |
| routeNumber | N21 ⓘ |
| servesCity |
London
ⓘ
linked to:
London, England
|
| serviceType | night bus ⓘ |
| usesBusType | double-decker bus ⓘ |
| usesTicketingSystem | cashless ⓘ |
| vehicleColor | red ⓘ |
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: London Buses route N21 Description of subject: London Buses route N21 is a night bus service in London that operates between central London and southeast suburbs, providing late-night transport for passengers traveling through areas such as London Bridge.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.