British Rail Class 56
E626142
The British Rail Class 56 is a heavy freight diesel-electric locomotive introduced in the 1970s for high-power haulage duties on the UK rail network.
All labels observed (3)
| Label | Occurrences |
|---|---|
| British Rail Class 56 canonical | 1 |
| British Rail Class 56 diesel-electric locomotives | 1 |
| British Rail Class 58 diesel-electric locomotives | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6208657 — 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 56 Context triple: [British Rail Class 47, successor, British Rail Class 56]
-
A.
British Rail Class 86
The British Rail Class 86 is a class of electric locomotives introduced in the 1960s for high-speed passenger and freight services on the West Coast Main Line and other electrified routes in the UK.
-
B.
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.
-
C.
British Rail Class 50
The British Rail Class 50 is a class of powerful diesel-electric locomotives built in the late 1960s for high-speed passenger services on the British railway network, particularly on the West Coast Main Line.
-
D.
British Rail Class 37
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.
-
E.
British Rail Class 40
The British Rail Class 40 is a class of heavy diesel-electric locomotives built in the late 1950s and early 1960s for express passenger and freight services on British Railways, now preserved and operated on heritage lines.
- 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 56 Target entity description: The British Rail Class 56 is a heavy freight diesel-electric locomotive introduced in the 1970s for high-power haulage duties on the UK rail network.
-
A.
British Rail Class 86
The British Rail Class 86 is a class of electric locomotives introduced in the 1960s for high-speed passenger and freight services on the West Coast Main Line and other electrified routes in the UK.
-
B.
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.
-
C.
British Rail Class 50
The British Rail Class 50 is a class of powerful diesel-electric locomotives built in the late 1960s for high-speed passenger services on the British railway network, particularly on the West Coast Main Line.
-
D.
British Rail Class 37
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.
-
E.
British Rail Class 40
The British Rail Class 40 is a class of heavy diesel-electric locomotives built in the late 1950s and early 1960s for express passenger and freight services on British Railways, now preserved and operated on heritage lines.
- F. None of above. chosen
Statements (57)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail locomotive class
ⓘ
diesel-electric locomotive ⓘ |
| brakingSystem | air and vacuum (early service) ⓘ |
| buildDate | 1976–1984 ⓘ |
| builder |
British Rail Engineering Limited
NERFINISHED
ⓘ
Brush Traction NERFINISHED ⓘ Electroputere NERFINISHED ⓘ |
| cabConfiguration | dual-cab ⓘ |
| category |
British diesel-electric locomotives
ⓘ
Co-Co locomotives ⓘ Railway locomotives introduced in 1976 ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| designedBy | British Rail Engineering Limited NERFINISHED ⓘ |
| designedFor |
heavy coal traffic
ⓘ
high-power freight duties ⓘ iron ore traffic ⓘ steel traffic ⓘ |
| engineType | turbocharged diesel ⓘ |
| enteredService | 1977 ⓘ |
| fleetNumbers | 56001–56135 ⓘ |
| gauge | standard gauge ⓘ |
| height | 3.91 m ⓘ |
| heritageUse | preserved on heritage railways ⓘ |
| introduced |
1970s
ⓘ
1976 ⓘ |
| lengthOverBuffers | 19.38 m ⓘ |
| locomotiveWeight | 126 tonnes ⓘ |
| maximumSpeed |
129 km/h
ⓘ
80 mph ⓘ |
| multipleWorking | dual ⓘ |
| multipleWorkingSystem | Blue Star NERFINISHED ⓘ |
| nickName | Grid ⓘ |
| numberBuilt | 135 ⓘ |
| operatingRegion | Great Britain NERFINISHED ⓘ |
| operator |
British Rail
NERFINISHED
ⓘ
Colas Rail NERFINISHED ⓘ DB Schenker UK NERFINISHED ⓘ DCRail NERFINISHED ⓘ EWS NERFINISHED ⓘ Fastline Freight NERFINISHED ⓘ Fertis ⓘ GB Railfreight NERFINISHED ⓘ UK Rail Leasing NERFINISHED ⓘ private freight operators in the UK ⓘ |
| powerOutput |
2423 kW
ⓘ
3250 hp ⓘ |
| powerType | diesel-electric ⓘ |
| primaryUse | heavy freight haulage ⓘ |
| primeMover | Ruston-Paxman RK3 NERFINISHED ⓘ |
| retiredFromBRMainline | 2004 ⓘ |
| trackGauge | 1435 mm ⓘ |
| tractiveEffort |
271 kN
ⓘ
61,000 lbf ⓘ |
| trainBrakes | air ⓘ |
| UICClassification | Co-Co ⓘ |
| wheelArrangement | Co-Co ⓘ |
| width | 2.64 m ⓘ |
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 56 Description of subject: The British Rail Class 56 is a heavy freight diesel-electric locomotive introduced in the 1970s for high-power haulage duties on the UK rail network.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
British Rail Class 56 diesel-electric locomotives
this entity surface form:
British Rail Class 58 diesel-electric locomotives