British Rail Class 142
E583661
The British Rail Class 142 is a type of diesel multiple unit "Pacer" train built in the 1980s for use on regional and commuter rail services in the UK, known for its bus-derived body design and basic ride quality.
All labels observed (1)
| Label | Occurrences |
|---|---|
| British Rail Class 142 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5828473 — 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 142 Context triple: [Arriva Trains Wales, operatedRollingStockClass, British Rail Class 142]
-
A.
British Rail Class 153
The British Rail Class 153 is a single-car diesel multiple unit train used on regional and rural passenger services across the UK rail network.
-
B.
British Rail Class 156
The British Rail Class 156 is a diesel multiple-unit passenger train built in the late 1980s for regional and local services across the UK rail network.
-
C.
British Rail Class 172
The British Rail Class 172 is a diesel multiple-unit train used on regional and suburban services in the UK, featuring improved performance, reliability, and passenger comfort over earlier Turbostar units.
-
D.
British Rail Class 165
The British Rail Class 165 is a diesel multiple-unit commuter train used primarily on suburban and regional services in the south 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 142 Target entity description: The British Rail Class 142 is a type of diesel multiple unit "Pacer" train built in the 1980s for use on regional and commuter rail services in the UK, known for its bus-derived body design and basic ride quality.
-
A.
British Rail Class 153
The British Rail Class 153 is a single-car diesel multiple unit train used on regional and rural passenger services across the UK rail network.
-
B.
British Rail Class 156
The British Rail Class 156 is a diesel multiple-unit passenger train built in the late 1980s for regional and local services across the UK rail network.
-
C.
British Rail Class 172
The British Rail Class 172 is a diesel multiple-unit train used on regional and suburban services in the UK, featuring improved performance, reliability, and passenger comfort over earlier Turbostar units.
-
D.
British Rail Class 165
The British Rail Class 165 is a diesel multiple-unit commuter train used primarily on suburban and regional services in the south 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 (50)
| Predicate | Object |
|---|---|
| instanceOf |
Pacer
ⓘ
diesel multiple unit ⓘ railway vehicle class ⓘ |
| bodyDesignDerivedFrom | Leyland National bus NERFINISHED ⓘ |
| bogieConfiguration | four-wheel underframes without conventional bogies ⓘ |
| brakeType | air brakes ⓘ |
| builtAt |
Derby Litchurch Lane Works
NERFINISHED
ⓘ
Workington NERFINISHED ⓘ |
| carBodyConstruction | steel underframe with bus-derived body ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| coupling | BSI automatic coupler ⓘ |
| designedFor | low-cost construction ⓘ |
| doorConfiguration | sliding plug doors ⓘ |
| engineType | Cummins diesel engine ⓘ |
| enteredService | 1985 ⓘ |
| family | Pacer family NERFINISHED ⓘ |
| formation | 2-car set ⓘ |
| introduced | 1985 ⓘ |
| manufacturer |
British Rail Engineering Limited
NERFINISHED
ⓘ
Leyland Bus NERFINISHED ⓘ |
| maximumSpeed | 75 mph ⓘ |
| nickName | Pacer NERFINISHED ⓘ |
| notedFor |
basic ride quality
ⓘ
bus-like interior ⓘ |
| numberBuilt | 96 units ⓘ |
| numberOfCarsPerUnit | 2 ⓘ |
| operator |
Arriva Trains Wales
NERFINISHED
ⓘ
British Rail NERFINISHED ⓘ First Great Western NERFINISHED ⓘ Merseyrail (past) ⓘ Northern Rail NERFINISHED ⓘ Transport for Wales Rail (until withdrawal) NERFINISHED ⓘ |
| powerType | diesel ⓘ |
| safetySystem |
AWS
NERFINISHED
ⓘ
TPWS NERFINISHED ⓘ |
| serviceType |
commuter rail
ⓘ
regional rail ⓘ |
| successor |
British Rail Class 150
NERFINISHED
ⓘ
British Rail Class 158 NERFINISHED ⓘ British Rail Class 170 NERFINISHED ⓘ British Rail Class 195 NERFINISHED ⓘ |
| trackGauge | 1435 mm standard gauge ⓘ |
| transmission | Voith hydraulic transmission NERFINISHED ⓘ |
| UICClassification | Bo-Bo ⓘ |
| usedInRegion |
Northern England
NERFINISHED
ⓘ
South West England NERFINISHED ⓘ Wales NERFINISHED ⓘ |
| usedOn |
branch lines
ⓘ
secondary main lines ⓘ |
| withdrawnFromService | 2020 ⓘ |
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 142 Description of subject: The British Rail Class 142 is a type of diesel multiple unit "Pacer" train built in the 1980s for use on regional and commuter rail services in the UK, known for its bus-derived body design and basic ride quality.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.