M1 trains
E390333
M1 trains are a fleet of modern electric metro trains used on the Prague Metro system, known for their high capacity and air-conditioned, articulated design.
All labels observed (2)
| Label | Occurrences |
|---|---|
| M1 metro trains | 1 |
| M1 trains canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3817706 — 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: M1 trains Context triple: [Prague Metro, hasRollingStock, M1 trains]
-
A.
M5 metro trains
M5 metro trains are a modern fleet of high-capacity, low-floor metro vehicles used on the Amsterdam Metro system, designed to improve comfort, accessibility, and efficiency.
-
B.
G1 trains
G1 trains are a modern fleet of electric multiple-unit subway trains operating on the Nuremberg U-Bahn system in Germany.
-
C.
L train
The L train is a New York City Subway service that runs crosstown along 14th Street in Manhattan and through Williamsburg and Bushwick in Brooklyn, known for its heavy ridership and role as a key connector between the boroughs.
-
D.
M train
The M train is a New York City Subway service that runs through parts of Queens, Brooklyn, and Manhattan, connecting neighborhoods such as Middle Village and Forest Hills with Midtown and Lower Manhattan.
-
E.
E train
The E train is a New York City Subway service that runs primarily along the IND Eighth Avenue Line, providing rapid transit between Queens and Manhattan.
- 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: M1 trains Target entity description: M1 trains are a fleet of modern electric metro trains used on the Prague Metro system, known for their high capacity and air-conditioned, articulated design.
-
A.
M5 metro trains
M5 metro trains are a modern fleet of high-capacity, low-floor metro vehicles used on the Amsterdam Metro system, designed to improve comfort, accessibility, and efficiency.
-
B.
G1 trains
G1 trains are a modern fleet of electric multiple-unit subway trains operating on the Nuremberg U-Bahn system in Germany.
-
C.
L train
The L train is a New York City Subway service that runs crosstown along 14th Street in Manhattan and through Williamsburg and Bushwick in Brooklyn, known for its heavy ridership and role as a key connector between the boroughs.
-
D.
M train
The M train is a New York City Subway service that runs through parts of Queens, Brooklyn, and Manhattan, connecting neighborhoods such as Middle Village and Forest Hills with Midtown and Lower Manhattan.
-
E.
E train
The E train is a New York City Subway service that runs primarily along the IND Eighth Avenue Line, providing rapid transit between Queens and Manhattan.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
electric multiple unit
ⓘ
metro rolling stock ⓘ rail vehicle class ⓘ |
| accessibilityFeature |
level boarding from platforms
ⓘ
wide doorways for easier access ⓘ |
| brakeType |
electrodynamic braking
ⓘ
pneumatic braking ⓘ |
| category | rolling stock of the Prague Metro ⓘ |
| comfortFeature |
air-conditioned passenger saloons
ⓘ
noise-reduced interior ⓘ |
| country | Czech Republic ⓘ |
| designedFor |
high passenger capacity
ⓘ
high-frequency metro service ⓘ underground operation ⓘ |
| designedToReplace | older Prague Metro train types ⓘ |
| doorConfiguration | multiple side doors per car ⓘ |
| environment |
subsurface metro infrastructure
ⓘ
underground tunnels ⓘ |
| feature |
CCTV surveillance
ⓘ
air conditioning ⓘ articulated design ⓘ electronic passenger information system ⓘ modern interior lighting ⓘ regenerative braking ⓘ separate driver’s cab ⓘ through gangways between cars ⓘ wide doors for rapid boarding ⓘ |
| gauge | standard gauge ⓘ |
| hasCapacity |
high standing passenger capacity
ⓘ
seated passengers ⓘ |
| introducedOnLine |
Line C (Prague Metro)
ⓘ
surface form:
Prague Metro Line C
|
| layout | multiple interconnected cars ⓘ |
| network |
Line C (Prague Metro)
ⓘ
surface form:
Prague Metro Line C
|
| operatedBy | Dopravní podnik hl. m. Prahy ⓘ |
| operatorCity | Prague ⓘ |
| powerCollectionMethod | third rail ⓘ |
| powerSupply | DC third rail ⓘ |
| propulsion | electric traction motors ⓘ |
| purpose | mass transit of passengers ⓘ |
| safetySystem | metro signalling system ⓘ |
| serviceType | rapid transit ⓘ |
| tractionType | electric ⓘ |
| usedIn | urban public transport ⓘ |
| usedOn | Prague Metro ⓘ |
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: M1 trains Description of subject: M1 trains are a fleet of modern electric metro trains used on the Prague Metro system, known for their high capacity and air-conditioned, articulated design.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Line C (Prague Metro)
this entity surface form:
M1 metro trains