Tyne and Wear Metro Class 994 units
E420769
The Tyne and Wear Metro Class 994 units are electric multiple-unit trains specifically built for and operated on the Tyne and Wear Metro light rail system in North East England.
All labels observed (6)
How this entity was disambiguated
This entity first appeared as the object of triple T4201854 — 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: Tyne and Wear Metro Class 994 units Context triple: [Gosforth depot, hasTypeOfRollingStockServiced, Tyne and Wear Metro Class 994 units]
-
A.
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.
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B.
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.
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C.
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.
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D.
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.
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E.
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.
- 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: Tyne and Wear Metro Class 994 units Target entity description: The Tyne and Wear Metro Class 994 units are electric multiple-unit trains specifically built for and operated on the Tyne and Wear Metro light rail system in North East England.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Tyne and Wear Metro rolling stock
ⓘ
electric multiple unit ⓘ passenger train ⓘ |
| brakeType |
air brakes
ⓘ
electro-pneumatic brakes ⓘ |
| builtFor | Tyne and Wear Metro NERFINISHED ⓘ |
| carFormation | two-car sets ⓘ |
| category |
British electric multiple units
ⓘ
light rail vehicles in the United Kingdom ⓘ |
| controlSystem | multiple-unit control ⓘ |
| country | United Kingdom ⓘ |
| couplingType | Scharfenberg coupler ⓘ |
| designedFor |
high-frequency service
ⓘ
short station spacing ⓘ suburban transit ⓘ third-rail free operation ⓘ urban transit ⓘ |
| doorOperation | power-operated ⓘ |
| doorType | sliding doors ⓘ |
| electrificationSystem | 1500 V DC overhead ⓘ |
| enteredService |
1980
ⓘ
early 1980s ⓘ |
| gauge | standard gauge ⓘ |
| hasBogieConfiguration | two-bogie cars ⓘ |
| hasRouteCompatibility | Tyne and Wear Metro network NERFINISHED ⓘ |
| introducedFor | Tyne and Wear Metro opening ⓘ |
| network | Tyne and Wear Metro NERFINISHED ⓘ |
| operatedBy | Nexus NERFINISHED ⓘ |
| operatingArea |
Gateshead
ⓘ
Newcastle upon Tyne ⓘ North Tyneside ⓘ South Tyneside ⓘ Sunderland ⓘ Tyne and Wear ⓘ |
| operator | Tyne and Wear Metro NERFINISHED ⓘ |
| plannedToBeReplacedBy | new Tyne and Wear Metro fleet ⓘ |
| powerCollectionMethod | overhead line ⓘ |
| propulsion | electric motors ⓘ |
| region | North East England ⓘ |
| safetySystem | automatic train protection ⓘ |
| serviceType |
light rail
ⓘ
rapid transit ⓘ |
| status | in service (legacy fleet, being replaced) ⓘ |
| trackGauge | 1435 mm ⓘ |
| traction | electric ⓘ |
| usedFor |
commuter transport
ⓘ
urban passenger transport ⓘ |
| usedOn |
Tyne and Wear Metro Green Line
NERFINISHED
ⓘ
Tyne and Wear Metro Yellow Line NERFINISHED ⓘ |
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: Tyne and Wear Metro Class 994 units Description of subject: The Tyne and Wear Metro Class 994 units are electric multiple-unit trains specifically built for and operated on the Tyne and Wear Metro light rail system in North East England.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Yellow Line (Tyne and Wear Metro)
this entity surface form:
Tyne and Wear Metro rolling stock
subject surface form:
Green Line (Tyne and Wear Metro)
this entity surface form:
Tyne and Wear Metro rolling stock
this entity surface form:
Tyne and Wear Metro trains
this entity surface form:
Tyne and Wear Metro Class 599 (Stadler) trains
this entity surface form:
Tyne and Wear Metro Class 994 (Metrocars)
Tyne and Wear Metro new fleet (Stadler-built units)
→
replaces
→
Tyne and Wear Metro Class 994 units
ⓘ
this entity surface form:
Tyne and Wear Metro original fleet