Class 158 diesel multiple unit
E607902
The Class 158 diesel multiple unit is a British regional passenger train built in the late 1980s and early 1990s, known for its air-conditioned interiors and use on longer-distance services across the UK rail network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Class 158 diesel multiple unit canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6594309 — 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 158 diesel multiple unit Context triple: [Edinburgh–Borders Railway, primaryRollingStock, Class 158 diesel multiple unit]
-
A.
Class 153 diesel multiple unit
The Class 153 diesel multiple unit is a single-car British regional train used primarily for local and rural passenger services on non-electrified lines.
-
B.
Class 150 diesel multiple unit
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.
-
C.
Class 156 diesel multiple unit
The Class 156 diesel multiple unit is a British two-car regional train type introduced in the late 1980s for local and medium-distance passenger services.
-
D.
Class 170 diesel multiple unit
The Class 170 diesel multiple unit is a British Turbostar family regional train used extensively for passenger services across the UK rail network.
-
E.
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.
- 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 158 diesel multiple unit Target entity description: The Class 158 diesel multiple unit is a British regional passenger train built in the late 1980s and early 1990s, known for its air-conditioned interiors and use on longer-distance services across the UK rail network.
-
A.
Class 153 diesel multiple unit
The Class 153 diesel multiple unit is a single-car British regional train used primarily for local and rural passenger services on non-electrified lines.
-
B.
Class 150 diesel multiple unit
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.
-
C.
Class 156 diesel multiple unit
The Class 156 diesel multiple unit is a British two-car regional train type introduced in the late 1980s for local and medium-distance passenger services.
-
D.
Class 170 diesel multiple unit
The Class 170 diesel multiple unit is a British Turbostar family regional train used extensively for passenger services across the UK rail network.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | diesel multiple unit ⓘ |
| alsoKnownAs | Express Sprinter NERFINISHED ⓘ |
| brakeType | air brakes ⓘ |
| builtBetween | 1989–1992 ⓘ |
| carBodyConstruction | steel ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| coupling | BSI automatic coupler ⓘ |
| designedBy | British Rail Engineering Limited NERFINISHED ⓘ |
| designedFor |
inter-urban services
ⓘ
longer-distance regional services ⓘ |
| doorType | single-leaf sliding plug doors ⓘ |
| engineType | diesel engine ⓘ |
| enteredServiceWith | Provincial sector of British Rail NERFINISHED ⓘ |
| family | Sprinter NERFINISHED ⓘ |
| features |
air conditioning
ⓘ
inter-car gangways ⓘ sealed windows ⓘ |
| formation |
2-car set
ⓘ
3-car set ⓘ |
| gauge | standard gauge ⓘ |
| hasSubclass | British Rail Class 159 NERFINISHED ⓘ |
| inService | 1989 ⓘ |
| introduced | 1989 ⓘ |
| manufacturer |
BREL Derby
NERFINISHED
ⓘ
British Rail Engineering Limited NERFINISHED ⓘ |
| maximumSpeed |
145 km/h
ⓘ
90 mph ⓘ |
| numberBuilt | 182 units ⓘ |
| operator |
British Rail
NERFINISHED
ⓘ
East Midlands Railway NERFINISHED ⓘ Great Western Railway NERFINISHED ⓘ Northern Trains ⓘ ScotRail ⓘ South Western Railway NERFINISHED ⓘ Transport for Wales Rail NERFINISHED ⓘ various British train operating companies ⓘ |
| powerType | diesel ⓘ |
| relatedTo |
British Rail Class 153
NERFINISHED
ⓘ
British Rail Class 155 NERFINISHED ⓘ British Rail Class 170 NERFINISHED ⓘ |
| serviceType |
commuter rail
ⓘ
regional rail ⓘ |
| successorTo |
Class 156 Super Sprinter
NERFINISHED
ⓘ
earlier Sprinter units such as Class 150 ⓘ |
| trackGauge | 1435 mm ⓘ |
| transmission | hydraulic transmission ⓘ |
| usedOn |
UK rail network
ⓘ
non-electrified main lines ⓘ |
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 158 diesel multiple unit Description of subject: The Class 158 diesel multiple unit is a British regional passenger train built in the late 1980s and early 1990s, known for its air-conditioned interiors and use on longer-distance services across the UK rail network.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.