British Rail Class 37
E256295
The British Rail Class 37 is a class of diesel-electric locomotives introduced in the early 1960s, renowned for their distinctive growling engine sound and long service life across the UK rail network.
All labels observed (4)
| Label | Occurrences |
|---|---|
| British Rail Class 37 canonical | 9 |
| British Rail Class 37/4 | 1 |
| British Rail Class 37/5 | 1 |
| British Rail Class 37/7 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2310138 — 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 37 Context triple: [East Lancashire Railway, hasNotableDieselClass, British Rail Class 37]
-
A.
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.
-
B.
British Rail Class 373
The British Rail Class 373 is a high-speed electric multiple unit train designed for cross-Channel services through the Channel Tunnel, primarily operated by Eurostar between the UK and mainland Europe.
-
C.
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.
-
D.
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.
-
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: British Rail Class 37 Target entity description: The British Rail Class 37 is a class of diesel-electric locomotives introduced in the early 1960s, renowned for their distinctive growling engine sound and long service life across the UK rail network.
-
A.
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.
-
B.
British Rail Class 373
The British Rail Class 373 is a high-speed electric multiple unit train designed for cross-Channel services through the Channel Tunnel, primarily operated by Eurostar between the UK and mainland Europe.
-
C.
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.
-
D.
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.
-
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 (60)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail locomotive class
ⓘ
diesel-electric locomotive class ⓘ |
| brakeType |
air brake
ⓘ
vacuum brake ⓘ |
| builder | English Electric ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| engineType | turbocharged diesel ⓘ |
| enteredService | 1960 ⓘ |
| gauge | standard gauge ⓘ |
| height | 12 ft 9.5 in ⓘ |
| heritageStatus | several units preserved ⓘ |
| introduced | early 1960s ⓘ |
| lengthOverBuffers | 61 ft 6 in ⓘ |
| locomotiveWeight | approximately 100 tonnes ⓘ |
| manufacturer |
English Electric Vulcan Foundry
ⓘ
Robert Stephenson and Hawthorns ⓘ |
| nickName | Tractor ⓘ |
| notableFeature |
distinctive growling engine sound
ⓘ
long service life ⓘ |
| operator |
British Rail
ⓘ
Colas Rail ⓘ Direct Rail Services ⓘ EWS ⓘ Network Rail ⓘ various UK heritage railways ⓘ |
| powerOutput | 1750 hp ⓘ |
| powerType | diesel-electric ⓘ |
| primeMover | English Electric 12CSVT ⓘ |
| productionEnd | 1965 ⓘ |
| productionStart | 1960 ⓘ |
| serviceRegion |
England
ⓘ
Scotland ⓘ Wales ⓘ |
| subclass |
Class 37/0
ⓘ
Class 37/4 ⓘ
linked to:
Class 37/0
Class 37/5 ⓘ
linked to:
Class 37/0
Class 37/6 ⓘ
linked to:
Class 37/0
Class 37/7 ⓘ
linked to:
Class 37/0
Class 37/9 ⓘ
linked to:
Class 37/0
|
| topSpeed | 90 mph ⓘ |
| totalProduced | 309 ⓘ |
| trackGauge | 1435 mm ⓘ |
| tractiveEffort | around 55,000 lbf ⓘ |
| trainHeating |
electric train heating (on some subclasses)
ⓘ
steam heating (original) ⓘ |
| UICClassification | Co-Co ⓘ |
| usedFor |
heavy freight in industrial regions
ⓘ
infrastructure monitoring trains ⓘ inter-regional passenger trains ⓘ nuclear flask trains ⓘ |
| usedOn |
freight services
ⓘ
heritage railways ⓘ mainline services in the UK ⓘ mixed-traffic duties ⓘ passenger services ⓘ railtours ⓘ regional services in the UK ⓘ rural branch lines ⓘ |
| wheelArrangement | Co-Co ⓘ |
| width | 8 ft 10 in ⓘ |
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 37 Description of subject: The British Rail Class 37 is a class of diesel-electric locomotives introduced in the early 1960s, renowned for their distinctive growling engine sound and long service life across the UK rail network.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Class 37/0
subject linked to:
Class 37/0
linked to: British Rail Class 37
subject linked to:
Class 37/0
linked to: British Rail Class 37
subject linked to:
Class 37/0
linked to: British Rail Class 37