British Rail Class 458
E661278
The British Rail Class 458 is a fleet of electric multiple-unit passenger trains used for suburban and regional services in the south of England, particularly around London.
All labels observed (2)
| Label | Occurrences |
|---|---|
| British Rail Class 458 canonical | 2 |
| Alstom Class 458 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6522838 — 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 458 Context triple: [Waterloo–Reading line, primaryRollingStock, British Rail Class 458]
-
A.
British Rail Class 465
The British Rail Class 465 is a family of electric multiple-unit commuter trains used primarily on suburban routes in Southeast England, particularly around London.
-
B.
British Rail Class 466
The British Rail Class 466 is a type of electric multiple unit train used on suburban and commuter services in Southeast England as part of the Networker family.
-
C.
British Rail Class 387
The British Rail Class 387 is a fleet of modern electric multiple-unit trains used on high-speed commuter and airport services in the UK.
-
D.
British Rail Class 444
The British Rail Class 444 is a fleet of modern electric multiple-unit passenger trains used by South Western Railway for long-distance services on routes including those from London Waterloo.
-
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 458 Target entity description: The British Rail Class 458 is a fleet of electric multiple-unit passenger trains used for suburban and regional services in the south of England, particularly around London.
-
A.
British Rail Class 465
The British Rail Class 465 is a family of electric multiple-unit commuter trains used primarily on suburban routes in Southeast England, particularly around London.
-
B.
British Rail Class 466
The British Rail Class 466 is a type of electric multiple unit train used on suburban and commuter services in Southeast England as part of the Networker family.
-
C.
British Rail Class 387
The British Rail Class 387 is a fleet of modern electric multiple-unit trains used on high-speed commuter and airport services in the UK.
-
D.
British Rail Class 444
The British Rail Class 444 is a fleet of modern electric multiple-unit passenger trains used by South Western Railway for long-distance services on routes including those from London Waterloo.
-
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 (47)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail electric multiple unit
ⓘ
electric multiple unit ⓘ passenger train ⓘ |
| brakingSystem | air brakes ⓘ |
| builtFor | South West Trains NERFINISHED ⓘ |
| carBodyConstruction | aluminium ⓘ |
| convertedFrom | Class 460 vehicles (for some units) ⓘ |
| countryOfOperation | United Kingdom ⓘ |
| coupling | Dellner NERFINISHED ⓘ |
| designedFor | outer suburban services from London Waterloo ⓘ |
| doorType | sliding plug doors ⓘ |
| electricSystem | 750 V DC third rail ⓘ |
| enteredService | 1999 ⓘ |
| family | Juniper NERFINISHED ⓘ |
| formation |
4-car units (original)
ⓘ
5-car units (after refurbishment) ⓘ |
| formerOperator | South West Trains NERFINISHED ⓘ |
| hasSubclass |
Class 458/0
NERFINISHED
ⓘ
Class 458/5 NERFINISHED ⓘ |
| introduced | 1998 ⓘ |
| manufacturer | Alstom NERFINISHED ⓘ |
| multipleWorking | compatible with Class 460 (after conversion) ⓘ |
| numberBuilt | 36 units ⓘ |
| operator | South Western Railway NERFINISHED ⓘ |
| operatorColourScheme |
South West Trains livery (original)
ⓘ
South Western Railway livery (current) NERFINISHED ⓘ |
| operatorNetwork |
South Western Main Line
NERFINISHED
ⓘ
Windsor Lines NERFINISHED ⓘ |
| owner | rolling stock leasing company (ROSCO) ⓘ |
| powerCollectionMethod | third-rail shoegear ⓘ |
| powerType | electric ⓘ |
| primaryAreaOfOperation | London commuter belt NERFINISHED ⓘ |
| primaryRoute | London Waterloo suburban routes ⓘ |
| refurbishedAs | Class 458/5 NERFINISHED ⓘ |
| refurbishmentOperator | Alstom NERFINISHED ⓘ |
| refurbishmentPeriod | 2013–2016 ⓘ |
| regionOfOperation | South of England NERFINISHED ⓘ |
| safetySystem |
AWS
ⓘ
TPWS NERFINISHED ⓘ |
| serviceStatus | in service ⓘ |
| topSpeed |
100 mph
ⓘ
160 km/h ⓘ |
| trackGauge | standard gauge ⓘ |
| UICClassification | Bo′Bo′+2′2′+2′2′+Bo′Bo′ (typical for 4-car set) ⓘ |
| usedOnServiceType |
commuter services
ⓘ
regional services ⓘ suburban services ⓘ |
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 458 Description of subject: The British Rail Class 458 is a fleet of electric multiple-unit passenger trains used for suburban and regional services in the south of England, particularly around London.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Alstom Class 458