Class 150 diesel multiple unit
E549675
The Class 150 diesel multiple unit is a British two- or three-car regional passenger train introduced in the 1980s and widely used on local and suburban services across the UK rail network.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Class 150 diesel multiple unit canonical | 2 |
| Class 150 Sprinter diesel multiple units | 1 |
| Class 150 diesel multiple units | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5842015 — 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: Class 150 diesel multiple unit Context triple: [Central Trains, operatedRollingStockType, Class 150 diesel multiple unit]
-
A.
Voyager diesel-electric multiple units
The Voyager diesel-electric multiple units are high-speed intercity trains used on long-distance routes across the UK rail network.
-
B.
Class 385 electric multiple units
The Class 385 electric multiple units are modern electric commuter trains used by ScotRail, primarily operating on electrified routes in Scotland’s Central Belt.
-
C.
British Rail Class 171
The British Rail Class 171 is a diesel multiple unit train used primarily by Southern in the UK, closely related to the Class 170 but equipped with different coupling systems for compatibility with other Southern stock.
-
D.
Class 365 electric multiple unit
The Class 365 electric multiple unit is a British dual-voltage commuter train type introduced in the 1990s for high-frequency suburban and regional services, primarily around London and the southeast.
-
E.
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.
- 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: Class 150 diesel multiple unit Target entity description: The Class 150 diesel multiple unit is a British two- or three-car regional passenger train introduced in the 1980s and widely used on local and suburban services across the UK rail network.
-
A.
Voyager diesel-electric multiple units
The Voyager diesel-electric multiple units are high-speed intercity trains used on long-distance routes across the UK rail network.
-
B.
Class 385 electric multiple units
The Class 385 electric multiple units are modern electric commuter trains used by ScotRail, primarily operating on electrified routes in Scotland’s Central Belt.
-
C.
British Rail Class 171
The British Rail Class 171 is a diesel multiple unit train used primarily by Southern in the UK, closely related to the Class 170 but equipped with different coupling systems for compatibility with other Southern stock.
-
D.
Class 365 electric multiple unit
The Class 365 electric multiple unit is a British dual-voltage commuter train type introduced in the 1990s for high-frequency suburban and regional services, primarily around London and the southeast.
-
E.
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.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail second-generation DMU
ⓘ
diesel multiple unit ⓘ |
| brakeType | air brakes ⓘ |
| builtFor | British Rail ⓘ |
| carBodyConstruction | steel ⓘ |
| carLength | approximately 20 metres ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| couplingType | BSI automatic coupler ⓘ |
| designedFor |
local passenger services
ⓘ
regional services ⓘ suburban services ⓘ |
| doorType | sliding plug doors ⓘ |
| engineManufacturer | Cummins ⓘ |
| enteredService | 1986 ⓘ |
| enteredTrafficOn | provincial sector of British Rail ⓘ |
| family | Sprinter ⓘ |
| formation |
2-car set
ⓘ
3-car set ⓘ |
| introduced | 1984 ⓘ |
| manufacturer |
BREL Derby
ⓘ
BREL York ⓘ British Rail Engineering Limited ⓘ |
| maximumSpeed | 75 mph ⓘ |
| multipleWorking | compatible with other Sprinter units ⓘ |
| numberBuilt | 137 units ⓘ |
| operator |
Arriva Trains Wales (past)
ⓘ
linked to:
Arriva Trains Wales
First Great Western (past) ⓘ
linked to:
First Great Western
Great Western Railway ⓘ London Midland (past) ⓘ
linked to:
London Midland
Northern Trains ⓘ ScotRail (past) ⓘ
linked to:
ScotRail
Transport for Wales Rail ⓘ West Midlands Railway ⓘ |
| operatorCountry | United Kingdom ⓘ |
| powerType | diesel-mechanical ⓘ |
| productionUnits |
Class 150/1
ⓘ
Class 150/2 ⓘ |
| prototypeUnits | Class 150/0 ⓘ |
| subclass |
Class 150/0
ⓘ
Class 150/1 ⓘ Class 150/2 ⓘ |
| successor |
British Rail Class 158
ⓘ
British Rail Class 170 ⓘ |
| trackGauge | 1435 mm standard gauge ⓘ |
| transmission |
Voith hydraulic transmission
ⓘ
linked to:
Voith
|
| usedOn |
branch line services
ⓘ
commuter services ⓘ regional rail services in England ⓘ regional rail services in Scotland ⓘ regional rail services in Wales ⓘ |
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: Class 150 diesel multiple unit Description of subject: The Class 150 diesel multiple unit is a British two- or three-car regional passenger train introduced in the 1980s and widely used on local and suburban services across the UK rail network.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Central Trains (former)
subject linked to:
First North Western (past)
linked to: Class 150 diesel multiple unit
linked to: Class 150 diesel multiple unit