British Rail Class 166
E575116
The British Rail Class 166 is a diesel multiple-unit train used primarily for regional and commuter services in the UK, known for its higher speed and comfort compared to earlier local units.
All labels observed (1)
| Label | Occurrences |
|---|---|
| British Rail Class 166 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5501873 — 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 166 Context triple: [Networker, hasSubclass, British Rail Class 166]
-
A.
British Rail Class 165
The British Rail Class 165 is a diesel multiple-unit commuter train used primarily on suburban and regional services in the south of England.
-
B.
British Rail Class 168
The British Rail Class 168 is a diesel multiple-unit train used primarily by Chiltern Railways for regional and intercity services in the United Kingdom.
-
C.
British Rail Class 153
The British Rail Class 153 is a single-car diesel multiple unit train used on regional and rural passenger services across the UK rail network.
-
D.
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.
-
E.
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.
- 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 166 Target entity description: The British Rail Class 166 is a diesel multiple-unit train used primarily for regional and commuter services in the UK, known for its higher speed and comfort compared to earlier local units.
-
A.
British Rail Class 165
The British Rail Class 165 is a diesel multiple-unit commuter train used primarily on suburban and regional services in the south of England.
-
B.
British Rail Class 168
The British Rail Class 168 is a diesel multiple-unit train used primarily by Chiltern Railways for regional and intercity services in the United Kingdom.
-
C.
British Rail Class 153
The British Rail Class 153 is a single-car diesel multiple unit train used on regional and rural passenger services across the UK rail network.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
British Rail diesel multiple unit
ⓘ
diesel multiple unit ⓘ |
| brakeType | air brakes ⓘ |
| builtFor | Network SouthEast Turbo programme NERFINISHED ⓘ |
| configuration | three-car set ⓘ |
| countryOfOperation | United Kingdom NERFINISHED ⓘ |
| couplingType | BSI automatic coupler ⓘ |
| designedAs | higher-comfort version of Class 165 ⓘ |
| designedFor |
commuter services
ⓘ
regional services ⓘ |
| engineManufacturer | Perkins NERFINISHED ⓘ |
| enteredService | 1993 ⓘ |
| family | Networker Turbo NERFINISHED ⓘ |
| features |
2+2 seating layout
ⓘ
air conditioning ⓘ carpeted interiors ⓘ luggage racks ⓘ toilets ⓘ |
| fleetNumbers | 166201–166221 ⓘ |
| formerOperator |
First Great Western
NERFINISHED
ⓘ
Thames Trains NERFINISHED ⓘ |
| introducedBy | British Rail NERFINISHED ⓘ |
| livery |
First Great Western green livery
ⓘ
Great Western Railway dark green livery ⓘ original Network SouthEast livery ⓘ |
| manufacturer |
ABB Transportation
NERFINISHED
ⓘ
ABB York NERFINISHED ⓘ |
| multipleWorking | compatible with Class 165 ⓘ |
| numberBuilt | 21 units ⓘ |
| operator | Great Western Railway NERFINISHED ⓘ |
| originalOperator | Network SouthEast NERFINISHED ⓘ |
| powerType | diesel-mechanical ⓘ |
| primaryRegionOfOperation |
Bristol area
NERFINISHED
ⓘ
Great Western Main Line NERFINISHED ⓘ South West England NERFINISHED ⓘ Thames Valley NERFINISHED ⓘ |
| relatedTo | British Rail Class 165 NERFINISHED ⓘ |
| serviceType |
regional express
ⓘ
suburban ⓘ |
| topSpeed |
145 km/h
ⓘ
90 mph ⓘ |
| trackGauge |
1435 mm
ⓘ
standard gauge ⓘ |
| UICClassification | Bo′2′+2′2′+2′Bo′ ⓘ |
| yearOfConstructionEnd | 1993 ⓘ |
| yearOfConstructionStart | 1992 ⓘ |
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 166 Description of subject: The British Rail Class 166 is a diesel multiple-unit train used primarily for regional and commuter services in the UK, known for its higher speed and comfort compared to earlier local units.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.