British Rail Class 90
E538996
The British Rail Class 90 is a class of electric locomotives introduced in the late 1980s for high-speed passenger and freight services on the UK’s electrified main lines.
All labels observed (2)
| Label | Occurrences |
|---|---|
| British Rail Class 90 canonical | 2 |
| British Rail Class 90 locomotives | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5501730 — 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: British Rail Class 90 Context triple: [Rail Express Systems, usedRollingStock, British Rail Class 90]
-
A.
British Rail Class 168
The British Rail Class 168 is a diesel multiple-unit train used primarily by Chiltern Railways for regional and intercity services in the United Kingdom.
-
B.
British Rail Class 387
The British Rail Class 387 is a fleet of modern electric multiple-unit trains used on high-speed commuter and airport services in the UK.
-
C.
British Rail Class 377
The British Rail Class 377 is a fleet of electric multiple-unit commuter trains widely used in southeast England, particularly by Govia Thameslink Railway services.
-
D.
British Rail Class 159
The British Rail Class 159 is a diesel multiple-unit train used for long-distance regional services in the UK, particularly known for operating intercity-style routes in the southwest of England.
-
E.
British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
- 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: British Rail Class 90 Target entity description: The British Rail Class 90 is a class of electric locomotives introduced in the late 1980s for high-speed passenger and freight services on the UK’s electrified main lines.
-
A.
British Rail Class 168
The British Rail Class 168 is a diesel multiple-unit train used primarily by Chiltern Railways for regional and intercity services in the United Kingdom.
-
B.
British Rail Class 387
The British Rail Class 387 is a fleet of modern electric multiple-unit trains used on high-speed commuter and airport services in the UK.
-
C.
British Rail Class 377
The British Rail Class 377 is a fleet of electric multiple-unit commuter trains widely used in southeast England, particularly by Govia Thameslink Railway services.
-
D.
British Rail Class 159
The British Rail Class 159 is a diesel multiple-unit train used for long-distance regional services in the UK, particularly known for operating intercity-style routes in the southwest of England.
-
E.
British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
- F. None of above. chosen
Statements (62)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail locomotive class
ⓘ
electric locomotive class ⓘ |
| axleLoadClass | heavy axle load ⓘ |
| brakingSystem | air brakes ⓘ |
| buildDateRange | 1987–1990 ⓘ |
| builder |
BREL Crewe Works
NERFINISHED
ⓘ
British Rail Engineering Limited NERFINISHED ⓘ |
| canWorkWith |
Driving Van Trailer
NERFINISHED
ⓘ
Mark 3 coaching stock NERFINISHED ⓘ |
| country | United Kingdom ⓘ |
| currentCollectionMethod | pantograph ⓘ |
| designedBy | British Rail Engineering Limited NERFINISHED ⓘ |
| designedFor |
West Coast Main Line
NERFINISHED
ⓘ
freight services ⓘ high-speed passenger services ⓘ |
| electricSystem | 25 kV AC overhead ⓘ |
| family | BR second-generation AC electric locomotives ⓘ |
| firstBuilt | 1987 ⓘ |
| fleetNumbers | 90001–90050 ⓘ |
| gauge | standard gauge ⓘ |
| hasMultipleWorkingSystem | Time-division multiplex (TDM) ⓘ |
| hasNickName |
Electric 90
NERFINISHED
ⓘ
Skoda NERFINISHED ⓘ |
| introduced | late 1980s ⓘ |
| lengthOverBuffers | approximately 18.9 m ⓘ |
| manufacturer | British Rail Engineering Limited NERFINISHED ⓘ |
| numberBuilt | 50 ⓘ |
| operator | British Rail NERFINISHED ⓘ |
| originalLivery |
InterCity Swallow
NERFINISHED
ⓘ
Railfreight NERFINISHED ⓘ |
| powerOutput |
5000 hp
ⓘ
approximately 3730 kW ⓘ |
| powerType | electric ⓘ |
| predecessor |
British Rail Class 86
NERFINISHED
ⓘ
British Rail Class 87 NERFINISHED ⓘ |
| primaryRoute | West Coast Main Line NERFINISHED ⓘ |
| primaryUseAfterPrivatisation |
Anglia passenger services
ⓘ
intermodal freight ⓘ |
| productionTotal | 50 ⓘ |
| routeAvailability | RA 7 ⓘ |
| successor | British Rail Class 91 NERFINISHED ⓘ |
| topSpeed |
110 mph
ⓘ
177 km/h ⓘ |
| tractiveEffort | approximately 258 kN ⓘ |
| trainHeating | Electric Train Supply ⓘ |
| UICClassification | Bo′Bo′ ⓘ |
| usedBy |
Abellio Greater Anglia
NERFINISHED
ⓘ
Anglia Railways NERFINISHED ⓘ DB Cargo UK NERFINISHED ⓘ DB Schenker Rail UK NERFINISHED ⓘ EWS NERFINISHED ⓘ Freightliner NERFINISHED ⓘ Greater Anglia NERFINISHED ⓘ InterCity NERFINISHED ⓘ Railfreight Distribution NERFINISHED ⓘ Virgin Trains NERFINISHED ⓘ |
| usedOn |
Anglia routes
ⓘ
Great Eastern Main Line NERFINISHED ⓘ intermodal freight services ⓘ mail and parcel trains ⓘ |
| weight | approximately 84 t ⓘ |
| wheelArrangement | Bo-Bo ⓘ |
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: British Rail Class 90 Description of subject: The British Rail Class 90 is a class of electric locomotives introduced in the late 1980s for high-speed passenger and freight services on the UK’s electrified main lines.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Anglia Railways
subject surface form:
British Rail Class 745
this entity surface form:
British Rail Class 90 locomotives