British Rail Class 143
E585443
The British Rail Class 143 is a type of diesel multiple unit "Pacer" train built in the 1980s for use on regional and commuter rail services in the UK.
All labels observed (1)
| Label | Occurrences |
|---|---|
| British Rail Class 143 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5828474 — 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 143 Context triple: [Arriva Trains Wales, operatedRollingStockClass, British Rail Class 143]
-
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 142
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.
-
C.
British Rail Class 166
The British Rail Class 166 is a diesel multiple-unit train used primarily for regional and commuter services in the UK, known for its higher speed and comfort compared to earlier local units.
-
D.
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.
-
E.
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.
- 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 143 Target entity description: The British Rail Class 143 is a type of diesel multiple unit "Pacer" train built in the 1980s for use on regional and commuter rail services in the UK.
-
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 142
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.
-
C.
British Rail Class 166
The British Rail Class 166 is a diesel multiple-unit train used primarily for regional and commuter services in the UK, known for its higher speed and comfort compared to earlier local units.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
Pacer train
ⓘ
diesel multiple unit ⓘ railway vehicle class ⓘ |
| basedOn | bus body design ⓘ |
| bodyConstruction | bus-style bodywork ⓘ |
| bodyworkBy | Walter Alexander NERFINISHED ⓘ |
| brakeType | air brakes ⓘ |
| builder |
Andrew Barclay
NERFINISHED
ⓘ
Hunslet-Barclay NERFINISHED ⓘ |
| carLength | about 15 m per car ⓘ |
| countryOfOperation | United Kingdom NERFINISHED ⓘ |
| couplingType | BSI automatic coupler ⓘ |
| designedFor |
branch line services
ⓘ
low-cost operation ⓘ regional services ⓘ |
| doorType | slam doors ⓘ |
| engineType | diesel engine ⓘ |
| enteredService |
1985
ⓘ
1986 ⓘ |
| family | Pacer NERFINISHED ⓘ |
| formation | 2-car set ⓘ |
| gauge | standard gauge ⓘ |
| introduced | 1980s ⓘ |
| maximumSpeed |
121 km/h
ⓘ
75 mph ⓘ |
| nickname | Pacer NERFINISHED ⓘ |
| numberBuilt | 25 units ⓘ |
| operatedBy |
Arriva Trains Wales
NERFINISHED
ⓘ
British Rail NERFINISHED ⓘ First Great Western NERFINISHED ⓘ Great Western Railway NERFINISHED ⓘ Northern NERFINISHED ⓘ Northern Rail NERFINISHED ⓘ Regional Railways NERFINISHED ⓘ Transport for Wales NERFINISHED ⓘ Wales & West NERFINISHED ⓘ Wessex Trains NERFINISHED ⓘ |
| operatorType |
commuter rail
ⓘ
regional rail ⓘ |
| powerType | diesel ⓘ |
| primaryRegionsOfOperation |
North East England
NERFINISHED
ⓘ
South West England NERFINISHED ⓘ Wales NERFINISHED ⓘ |
| safetyComplianceIssue | Persons of Reduced Mobility Technical Specification for Interoperability non-compliance ⓘ |
| serviceRole | secondary passenger services ⓘ |
| successor |
British Rail Class 150
NERFINISHED
ⓘ
British Rail Class 150/2 refurbishment programmes ⓘ British Rail Class 158 NERFINISHED ⓘ British Rail Class 170 NERFINISHED ⓘ British Rail Class 195 NERFINISHED ⓘ British Rail Class 197 NERFINISHED ⓘ |
| trackGauge | 1435 mm ⓘ |
| transmission | mechanical transmission ⓘ |
| UICClassification | Bo′2′ ⓘ |
| withdrawnFromService | 2020s ⓘ |
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 143 Description of subject: The British Rail Class 143 is a type of diesel multiple unit "Pacer" train built in the 1980s for use on regional and commuter rail services in the UK.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.