British Rail Class 321
E679520
The British Rail Class 321 is a type of electric multiple unit train introduced in the late 1980s for commuter and regional services in the UK, widely used in East Anglia and other routes before being superseded by newer fleets.
All labels observed (1)
| Label | Occurrences |
|---|---|
| British Rail Class 321 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7040288 — 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 321 Context triple: [British Rail Class 745, replaced, British Rail Class 321]
-
A.
British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
-
B.
British Rail Class 325
The British Rail Class 325 is an electric multiple unit train type designed specifically for high-speed postal and parcel services on the UK rail network.
-
C.
British Rail Class 317
The British Rail Class 317 is a type of electric multiple unit train introduced in the early 1980s for commuter services in and around London and the East of England.
-
D.
British Rail Class 365
The British Rail Class 365 is a fleet of electric multiple-unit passenger trains built in the mid-1990s for suburban and regional services in southeast England and on the East Coast Main Line.
-
E.
British Rail Class 332
The British Rail Class 332 is an electric multiple unit train type built in the late 1990s specifically for high-speed, premium passenger services between London Paddington and Heathrow Airport.
- 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 321 Target entity description: The British Rail Class 321 is a type of electric multiple unit train introduced in the late 1980s for commuter and regional services in the UK, widely used in East Anglia and other routes before being superseded by newer fleets.
-
A.
British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
-
B.
British Rail Class 325
The British Rail Class 325 is an electric multiple unit train type designed specifically for high-speed postal and parcel services on the UK rail network.
-
C.
British Rail Class 317
The British Rail Class 317 is a type of electric multiple unit train introduced in the early 1980s for commuter services in and around London and the East of England.
-
D.
British Rail Class 365
The British Rail Class 365 is a fleet of electric multiple-unit passenger trains built in the mid-1990s for suburban and regional services in southeast England and on the East Coast Main Line.
-
E.
British Rail Class 332
The British Rail Class 332 is an electric multiple unit train type built in the late 1990s specifically for high-speed, premium passenger services between London Paddington and Heathrow Airport.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail electric multiple unit
ⓘ
electric multiple unit ⓘ |
| brakeType | air brakes ⓘ |
| carbody | steel ⓘ |
| collectionMethod | pantograph ⓘ |
| configuration | 4-car unit ⓘ |
| countryOfOperation | United Kingdom ⓘ |
| coupling | Tightlock ⓘ |
| designedFor |
commuter services
ⓘ
regional services ⓘ |
| doorType |
power-operated sliding doors (refurbished)
ⓘ
slam doors (original) ⓘ |
| electricSystem | 25 kV AC overhead ⓘ |
| enteredService | 1988 ⓘ |
| family | British Rail Mark 3 based EMU NERFINISHED ⓘ |
| formation | DTSO+TSO+MSO+DTSO ⓘ |
| gauge | standard gauge ⓘ |
| introduced | late 1980s ⓘ |
| manufacturer | BREL York NERFINISHED ⓘ |
| multipleWorking |
compatible with Class 317
ⓘ
compatible with Class 455 (limited) ⓘ |
| numberBuilt | 117 units ⓘ |
| operator |
Greater Anglia
NERFINISHED
ⓘ
London Midland NERFINISHED ⓘ Network SouthEast NERFINISHED ⓘ Northern Rail NERFINISHED ⓘ ScotRail ⓘ Silverlink NERFINISHED ⓘ c2c NERFINISHED ⓘ |
| owner | Angel Trains NERFINISHED ⓘ |
| powerType | electric ⓘ |
| primaryAreaOfUse |
East Anglia
NERFINISHED
ⓘ
Great Eastern Main Line NERFINISHED ⓘ West Coast Main Line commuter services NERFINISHED ⓘ |
| refurbishmentProgram | Renatus refurbishment ⓘ |
| status | being phased out of front-line service ⓘ |
| subclass |
Class 321/3
NERFINISHED
ⓘ
Class 321/4 NERFINISHED ⓘ Class 321/9 NERFINISHED ⓘ |
| successor |
British Rail Class 350
NERFINISHED
ⓘ
British Rail Class 379 NERFINISHED ⓘ British Rail Class 720 NERFINISHED ⓘ British Rail Class 745 NERFINISHED ⓘ |
| topSpeed |
100 mph
ⓘ
161 km/h ⓘ |
| trackGauge | 1435 mm ⓘ |
| usedOn |
London Liverpool Street to Clacton services
ⓘ
London Liverpool Street to Ipswich services ⓘ London Liverpool Street to Southend services NERFINISHED ⓘ commuter services into London Euston ⓘ |
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 321 Description of subject: The British Rail Class 321 is a type of electric multiple unit train introduced in the late 1980s for commuter and regional services in the UK, widely used in East Anglia and other routes before being superseded by newer fleets.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
British Rail Class 745
subject surface form:
British Rail Class 720