British Rail Class 171
E148394
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| British Rail Class 171 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1140370 — 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 171 Context triple: [British Rail Class 170, relatedTo, British Rail Class 171]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
British Rail Class 47
The British Rail Class 47 is a widely used diesel-electric locomotive class introduced in the 1960s, notable for its extensive service across the UK rail network with both passenger and freight trains.
-
E.
British Rail Class 395
The British Rail Class 395 is a high-speed electric multiple unit train used in the UK, best known for operating Southeastern’s domestic services on High Speed 1 between London and Kent.
- 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 171 Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
British Rail Class 47
The British Rail Class 47 is a widely used diesel-electric locomotive class introduced in the 1960s, notable for its extensive service across the UK rail network with both passenger and freight trains.
-
E.
British Rail Class 395
The British Rail Class 395 is a high-speed electric multiple unit train used in the UK, best known for operating Southeastern’s domestic services on High Speed 1 between London and Kent.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail diesel multiple unit
ⓘ
diesel multiple unit ⓘ rolling stock class ⓘ |
| brakingSystem | air brakes ⓘ |
| category |
Bombardier Turbostar multiple units
ⓘ
British diesel multiple units ⓘ |
| country | United Kingdom ⓘ |
| couplingCompatibility | Southern suburban stock with Dellner couplers ⓘ |
| couplingDifferenceFrom | British Rail Class 170 ⓘ |
| couplingType | Dellner ⓘ |
| derivedFrom |
British Rail Class 170
ⓘ
surface form:
British Rail Class 170 design
|
| designedBy |
Alstom (formerly Bombardier Transportation)
ⓘ
surface form:
Bombardier Transportation UK
|
| designedFor | non-electrified routes ⓘ |
| doorType | power-operated sliding plug doors ⓘ |
| family | Turbostar ⓘ |
| hasCabEnds | gangwayed cab ends on some units ⓘ |
| introduced |
2003
ⓘ
2004 ⓘ |
| manufacturer |
ADtranz
ⓘ
Alstom (formerly Bombardier Transportation) ⓘ
surface form:
Bombardier Transportation
|
| multipleWorkingCompatibility |
Southern Electrostar units (via Dellner couplers)
ⓘ
other Class 171 units ⓘ |
| operatedBy | Southern Railway franchise ⓘ |
| operator |
Govia Thameslink Railway
ⓘ
Southern ⓘ |
| operatorClassDesignation | Turbostar ⓘ |
| owner | rolling stock leasing companies (ROSCOs) used by Southern ⓘ |
| powerCollectionMethod | onboard diesel fuel ⓘ |
| powerType | diesel ⓘ |
| propulsion | diesel engine driving electric transmission or mechanical transmission (Turbostar family standard) ⓘ |
| region | South East England ⓘ |
| relatedTo | British Rail Class 170 ⓘ |
| safetySystem |
AWS
ⓘ
TPWS ⓘ |
| serviceStatus | in service ⓘ |
| serviceType |
commuter
ⓘ
regional ⓘ |
| trackGauge | standard gauge ⓘ |
| trainHeating | electric train heating ⓘ |
| UICClassification | DMU ⓘ |
| usedFor | passenger services ⓘ |
| usedOn |
Marshlink Line
ⓘ
surface form:
Marshlink line
Southern network ⓘ Uckfield line ⓘ regional services in South East England ⓘ services between London and the south coast ⓘ |
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 171 Description of subject: 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.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
British Rail Class 170