Northfields depot
E304078
Northfields depot is a London Underground maintenance and stabling facility serving trains on the Piccadilly line in west London.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Northfields depot canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2844787 — 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: Northfields depot Context triple: [Piccadilly line, depot, Northfields depot]
-
A.
Neasden Depot
Neasden Depot is a major London Underground maintenance and stabling facility serving trains on the Metropolitan line.
-
B.
Queens Road depot
Queens Road depot is a major tram maintenance and operations facility serving the Manchester Metrolink light rail network.
-
C.
Stonebridge Park depot
Stonebridge Park depot is a London Underground maintenance and stabling facility serving trains on the Bakerloo line.
-
D.
London Road depot
London Road depot is a maintenance and stabling facility for London Underground trains serving the Bakerloo line near Waterloo in central London.
-
E.
Queen's Park depot
Queen's Park depot is a London Underground maintenance and stabling facility associated with the Bakerloo line near Queen's Park in northwest London.
- 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: Northfields depot Target entity description: Northfields depot is a London Underground maintenance and stabling facility serving trains on the Piccadilly line in west London.
-
A.
Neasden Depot
Neasden Depot is a major London Underground maintenance and stabling facility serving trains on the Metropolitan line.
-
B.
Queens Road depot
Queens Road depot is a major tram maintenance and operations facility serving the Manchester Metrolink light rail network.
-
C.
Stonebridge Park depot
Stonebridge Park depot is a London Underground maintenance and stabling facility serving trains on the Bakerloo line.
-
D.
London Road depot
London Road depot is a maintenance and stabling facility for London Underground trains serving the Bakerloo line near Waterloo in central London.
-
E.
Queen's Park depot
Queen's Park depot is a London Underground maintenance and stabling facility associated with the Bakerloo line near Queen's Park in northwest London.
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
London Underground depot
ⓘ
railway maintenance depot ⓘ train stabling facility ⓘ |
| adjacentTo | Northfields tube station ⓘ |
| category |
London Underground depots
ⓘ
Rail transport in the London Borough of Ealing ⓘ |
| connectedTo |
Piccadilly line tracks
ⓘ
linked to:
Piccadilly line
|
| electrificationSystem | four-rail DC ⓘ |
| hasFunction |
cleaning of trains
ⓘ
light maintenance ⓘ train maintenance ⓘ train stabling ⓘ |
| locatedIn |
London
ⓘ
linked to:
London, England
London Borough of Ealing ⓘ Northfields ⓘ west London ⓘ |
| locatedInCountry | United Kingdom ⓘ |
| operatedBy | London Underground ⓘ |
| ownedBy | Transport for London ⓘ |
| partOfNetwork | London Underground ⓘ |
| railwaySystem | standard gauge ⓘ |
| servesDirection |
central London services on Piccadilly line
ⓘ
westbound services on Piccadilly line ⓘ |
| servesLine | Piccadilly line ⓘ |
| servesRollingStock | Piccadilly line 1973 Stock ⓘ |
| usedFor |
daytime stabling of trains
ⓘ
overnight stabling of 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: Northfields depot Description of subject: Northfields depot is a London Underground maintenance and stabling facility serving trains on the Piccadilly line in west London.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.