Class 317 electric multiple unit
E634708
The Class 317 electric multiple unit is a type of British suburban electric train introduced in the early 1980s for commuter services on 25 kV AC overhead electrified routes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Class 317 electric multiple unit canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6963247 — 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 317 electric multiple unit Context triple: [First Capital Connect, usedRollingStockType, Class 317 electric multiple unit]
-
A.
Class 319 electric multiple unit
The Class 319 electric multiple unit is a dual-voltage British commuter train class introduced in the late 1980s for services on routes such as Thameslink, capable of operating on both overhead and third-rail electrification systems.
-
B.
Class 321 electric multiple unit
The Class 321 electric multiple unit is a British suburban and commuter train type introduced in the late 1980s for high-capacity, overhead-electrified passenger services.
-
C.
Class 323 electric multiple unit
The Class 323 electric multiple unit is a type of British suburban electric train widely used for high-frequency commuter services around cities such as Birmingham and Manchester.
-
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.
Class 360 electric multiple unit
The Class 360 electric multiple unit is a type of British high-speed commuter train used on electrified mainline routes for regional and outer-suburban passenger services.
- 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 317 electric multiple unit Target entity description: The Class 317 electric multiple unit is a type of British suburban electric train introduced in the early 1980s for commuter services on 25 kV AC overhead electrified routes.
-
A.
Class 319 electric multiple unit
The Class 319 electric multiple unit is a dual-voltage British commuter train class introduced in the late 1980s for services on routes such as Thameslink, capable of operating on both overhead and third-rail electrification systems.
-
B.
Class 321 electric multiple unit
The Class 321 electric multiple unit is a British suburban and commuter train type introduced in the late 1980s for high-capacity, overhead-electrified passenger services.
-
C.
Class 323 electric multiple unit
The Class 323 electric multiple unit is a type of British suburban electric train widely used for high-frequency commuter services around cities such as Birmingham and Manchester.
-
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.
Class 360 electric multiple unit
The Class 360 electric multiple unit is a type of British high-speed commuter train used on electrified mainline routes for regional and outer-suburban passenger services.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail EMU
ⓘ
electric multiple unit ⓘ |
| brakeType | air brakes ⓘ |
| buildEnd | 1987 ⓘ |
| buildStart | 1981 ⓘ |
| carBodyMaterial | steel ⓘ |
| collectionMethod | pantograph ⓘ |
| country | United Kingdom ⓘ |
| couplingType | Scharfenberg compatible multiple-working within class ⓘ |
| derivedFrom | British Rail Mark 3 coach design NERFINISHED ⓘ |
| designedFor |
commuter services
ⓘ
suburban services ⓘ |
| doorType | slam doors ⓘ |
| electricSystem | 25 kV 50 Hz AC overhead ⓘ |
| enteredService | 1983 ⓘ |
| family | Mark 3-based EMU ⓘ |
| formation | 4-car unit ⓘ |
| hasSubclass |
Class 317/1
NERFINISHED
ⓘ
Class 317/2 NERFINISHED ⓘ Class 317/5 NERFINISHED ⓘ Class 317/7 NERFINISHED ⓘ |
| introduced | early 1980s ⓘ |
| introducedInYear | 1983 ⓘ |
| lengthPerCar | approximately 20 metres ⓘ |
| manufacturer |
BREL York
NERFINISHED
ⓘ
British Rail Engineering Limited NERFINISHED ⓘ |
| maximumSpeed |
100 mph
ⓘ
161 km/h ⓘ |
| multipleWorking | with other Class 317 units ⓘ |
| numberBuilt | 72 units ⓘ |
| operatedOn |
Great Eastern Main Line suburban branches
NERFINISHED
ⓘ
West Coast Main Line suburban branches ⓘ |
| operator |
Abellio Greater Anglia
NERFINISHED
ⓘ
British Rail NERFINISHED ⓘ First Capital Connect NERFINISHED ⓘ London Overground NERFINISHED ⓘ Network SouthEast NERFINISHED ⓘ WAGN NERFINISHED ⓘ |
| powerSupply | 25 kV AC overhead ⓘ |
| serviceType | passenger ⓘ |
| status | largely withdrawn from regular service by early 2020s ⓘ |
| totalLengthPerUnit | approximately 80 metres ⓘ |
| trackGauge | standard gauge ⓘ |
| tractionType | AC electric ⓘ |
| usedFor |
outer suburban services from London King’s Cross
ⓘ
outer suburban services from London Liverpool Street ⓘ |
| usedOn |
Great Northern routes
ⓘ
West Anglia routes NERFINISHED ⓘ electrified main lines out of London ⓘ |
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 317 electric multiple unit Description of subject: The Class 317 electric multiple unit is a type of British suburban electric train introduced in the early 1980s for commuter services on 25 kV AC overhead electrified routes.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.