Moscow Metro 81-series trains
E1004458
Moscow Metro 81-series trains are a family of electric multiple-unit subway cars widely used across the Moscow Metro system, known for their standardized design and long service history.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Moscow Metro 81-series trains canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12825375 — 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: Moscow Metro 81-series trains Context triple: [Nakhimovsky Prospekt, hasRollingStockType, Moscow Metro 81-series trains]
-
A.
Moscow Metro 81-767 series
The Moscow Metro 81-767 series is a modern generation of metro trainsets used on Moscow’s rapid transit system, featuring improved energy efficiency, passenger comfort, and advanced onboard systems.
-
B.
Moscow Metro 81-776 series
The Moscow Metro 81-776 series is a modern generation of metro trainsets used on Moscow’s network, featuring improved energy efficiency, passenger comfort, and advanced onboard systems.
-
C.
Moscow Metro 81-766 series
The Moscow Metro 81-766 series is a modern generation of high-capacity electric multiple unit trains used on newer lines of the Moscow Metro, featuring improved energy efficiency, passenger comfort, and advanced onboard systems.
-
D.
Moscow Metro 81-765 series
The Moscow Metro 81-765 series is a modern generation of metro trains featuring improved energy efficiency, passenger comfort, and advanced onboard systems, used on newer lines of the Moscow Metro.
-
E.
Butovskaya Line trains
Butovskaya Line trains are the rolling stock operating on Moscow Metro’s Butovskaya Line, providing automated light metro service to the Butovo district.
- 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: Moscow Metro 81-series trains Target entity description: Moscow Metro 81-series trains are a family of electric multiple-unit subway cars widely used across the Moscow Metro system, known for their standardized design and long service history.
-
A.
Moscow Metro 81-767 series
The Moscow Metro 81-767 series is a modern generation of metro trainsets used on Moscow’s rapid transit system, featuring improved energy efficiency, passenger comfort, and advanced onboard systems.
-
B.
Moscow Metro 81-776 series
The Moscow Metro 81-776 series is a modern generation of metro trainsets used on Moscow’s network, featuring improved energy efficiency, passenger comfort, and advanced onboard systems.
-
C.
Moscow Metro 81-766 series
The Moscow Metro 81-766 series is a modern generation of high-capacity electric multiple unit trains used on newer lines of the Moscow Metro, featuring improved energy efficiency, passenger comfort, and advanced onboard systems.
-
D.
Moscow Metro 81-765 series
The Moscow Metro 81-765 series is a modern generation of metro trains featuring improved energy efficiency, passenger comfort, and advanced onboard systems, used on newer lines of the Moscow Metro.
-
E.
Butovskaya Line trains
Butovskaya Line trains are the rolling stock operating on Moscow Metro’s Butovskaya Line, providing automated light metro service to the Butovo district.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
electric multiple unit
ⓘ
rapid transit rolling stock ⓘ subway car family ⓘ |
| belongsToSeriesFamily | 81-series metro trains ⓘ |
| brakeType |
electrodynamic braking
ⓘ
pneumatic braking ⓘ |
| characteristic |
long service life
ⓘ
standardized design ⓘ steel carbody ⓘ |
| climateAdaptation | designed for cold climate operation ⓘ |
| controlType | multiple-unit train control ⓘ |
| country |
Russian Federation
ⓘ
linked to:
Russia
|
| countryOfOperation | Russia ⓘ |
| couplingType | automatic coupler ⓘ |
| designedFor |
heavy metro service
ⓘ
high acceleration and deceleration ⓘ high passenger capacity ⓘ high standing passenger load ⓘ high-frequency metro operation ⓘ operation in tunnels ⓘ rapid passenger exchange at stations ⓘ |
| doorArrangement | multiple side doors per car ⓘ |
| doorType | sliding doors ⓘ |
| electricSystem | 825 V DC third rail ⓘ |
| gauge | 1520 mm ⓘ |
| networkLocation | Moscow ⓘ |
| networkType | urban rail transit ⓘ |
| operatedAs | multiple unit ⓘ |
| operatedOn |
subsurface metro lines
ⓘ
underground lines ⓘ |
| operator |
Moscow Metro state unitary enterprise
ⓘ
linked to:
Moscow Metro (operator)
|
| passengerFacilities |
overhead handrails
ⓘ
seating along car sides (longitudinal seating) ⓘ |
| powerCollectionMethod | third rail ⓘ |
| railwaySystem | Moscow Metro ⓘ |
| safetyFeature |
automatic train protection compatibility
ⓘ
emergency braking system ⓘ |
| serviceStatus | in regular operation (as of early 2020s) ⓘ |
| serviceType | passenger ⓘ |
| trackGauge | Russian broad gauge ⓘ |
| traction | electric ⓘ |
| usedFor |
commuter transport within Moscow
ⓘ
mass transit ⓘ |
| usedIn | Moscow 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: Moscow Metro 81-series trains Description of subject: Moscow Metro 81-series trains are a family of electric multiple-unit subway cars widely used across the Moscow Metro system, known for their standardized design and long service history.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.