81-760 Oka metro train
E878861
The 81-760 "Oka" is a modern Russian metro train series designed for high-capacity, energy-efficient urban rail service, widely used in the Moscow Metro.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 81-760 Oka metro train canonical | 1 |
| 81-761 Oka metro train | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10681400 — 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: 81-760 Oka metro train Context triple: [Metrovagonmash, notableWork, 81-760 Oka metro train]
-
A.
Osaka Metro 70 series
The Osaka Metro 70 series is a type of electric multiple unit train used on Osaka’s Nagahori Tsurumi-ryokuchi Line, known for its linear motor propulsion and modern urban transit design.
-
B.
Tokyo Metro 07 series
The Tokyo Metro 07 series is a Japanese electric multiple unit train type that formerly operated on Tokyo Metro lines before being phased out in favor of newer rolling stock.
-
C.
Osaka Metro 66 series
The Osaka Metro 66 series is a type of electric multiple unit train operated by Osaka Metro, primarily serving urban commuter routes in Osaka, Japan.
-
D.
Tokyo Metro 08 series
The Tokyo Metro 08 series is a Japanese electric multiple unit train type operated by Tokyo Metro on urban commuter services.
-
E.
Tokyo Metro 8000 series
The Tokyo Metro 8000 series is a fleet of electric multiple unit trains introduced in the early 1980s for Tokyo’s subway network, known for their long service life and multiple refurbishment programs.
- 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: 81-760 Oka metro train Target entity description: The 81-760 "Oka" is a modern Russian metro train series designed for high-capacity, energy-efficient urban rail service, widely used in the Moscow Metro.
-
A.
Osaka Metro 70 series
The Osaka Metro 70 series is a type of electric multiple unit train used on Osaka’s Nagahori Tsurumi-ryokuchi Line, known for its linear motor propulsion and modern urban transit design.
-
B.
Tokyo Metro 07 series
The Tokyo Metro 07 series is a Japanese electric multiple unit train type that formerly operated on Tokyo Metro lines before being phased out in favor of newer rolling stock.
-
C.
Osaka Metro 66 series
The Osaka Metro 66 series is a type of electric multiple unit train operated by Osaka Metro, primarily serving urban commuter routes in Osaka, Japan.
-
D.
Tokyo Metro 08 series
The Tokyo Metro 08 series is a Japanese electric multiple unit train type operated by Tokyo Metro on urban commuter services.
-
E.
Tokyo Metro 8000 series
The Tokyo Metro 8000 series is a fleet of electric multiple unit trains introduced in the early 1980s for Tokyo’s subway network, known for their long service life and multiple refurbishment programs.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
electric multiple unit
ⓘ
metro train series ⓘ |
| belongsToFamily | 81-760/761/763/764 Oka family ⓘ |
| belongsToNetwork | Moscow Metro rolling stock fleet ⓘ |
| brakeType |
electrodynamic braking
ⓘ
pneumatic braking ⓘ |
| countryOfOrigin | Russia ⓘ |
| designedBy |
Metrovagonmash design bureau
ⓘ
linked to:
Metrovagonmash
|
| designedFor |
energy-efficient operation
ⓘ
high passenger throughput at peak hours ⓘ high-capacity urban rail service ⓘ |
| designedToComplyWith | modern fire safety standards for metro stock ⓘ |
| doorType | sliding plug doors ⓘ |
| gauge | 1520 mm ⓘ |
| hasBogieType |
two-axle motor bogies
ⓘ
two-axle trailer bogies ⓘ |
| hasFeature |
air conditioning
ⓘ
energy-efficient traction equipment ⓘ improved noise insulation ⓘ modern passenger information systems ⓘ through gangways between cars in some variants ⓘ wide doorways for fast boarding ⓘ |
| hasInteriorLayout | longitudinal seating ⓘ |
| hasSafetySystem |
automatic train operation on equipped lines
ⓘ
automatic train protection ⓘ |
| hasVariant |
81-761 Oka
ⓘ
linked to:
81-760/761 Oka
81-763 Oka ⓘ 81-764 Oka ⓘ
linked to:
81-760/761 Oka
|
| introduced | 2010s ⓘ |
| manufacturer | Metrovagonmash ⓘ |
| marketedAs | Oka ⓘ |
| namedAfter | Oka River ⓘ |
| operator | Moscow Metro ⓘ |
| powerCollectionMethod | third rail ⓘ |
| powerSupplyVoltage | 825 V DC (third rail) ⓘ |
| replaced | older 81-717/714 series on some lines ⓘ |
| rollingStockType | heavy metro rolling stock ⓘ |
| serviceArea | Moscow ⓘ |
| serviceStatus | in regular passenger service ⓘ |
| serviceType | rapid transit ⓘ |
| tractionType | electric traction ⓘ |
| trainsetFormation | multiple-car fixed formation ⓘ |
| usedIn | underground metro tunnels ⓘ |
| usedOn |
Moscow Metro Kalininsko-Solntsevskaya Line
ⓘ
Moscow Metro Tagansko-Krasnopresnenskaya Line ⓘ Moscow Metro other high-capacity lines ⓘ |
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: 81-760 Oka metro train Description of subject: The 81-760 "Oka" is a modern Russian metro train series designed for high-capacity, energy-efficient urban rail service, widely used in the Moscow Metro.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 81-760 Oka metro train