81-717/714 series
E229094
The 81-717/714 series is a widely used Soviet-designed electric multiple unit metro train type that has operated on numerous subway systems across the former Eastern Bloc and beyond.
All labels observed (6)
| Label | Occurrences |
|---|---|
| 81-714 metro car series | 1 |
| 81-717 metro car series | 1 |
| 81-717.5M/714.5M | 1 |
| 81-717.6K/714.6K | 1 |
| 81-717/714 | 1 |
| 81-717/714 series canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2051925 — 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: 81-717/714 series Context triple: [Kalininsko–Solntsevskaya Line, usesRollingStock, 81-717/714 series]
-
A.
Tokyu 5000 series
The Tokyu 5000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation, primarily used for commuter services in the Tokyo metropolitan area.
-
B.
Tokyu 5050 series
The Tokyu 5050 series is a Japanese electric multiple unit commuter train type operated by Tokyu Corporation and used on through-services with Tokyo Metro and other railway lines in the Tokyo area.
-
C.
E231 series EMU
The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
-
D.
Seibu 6000 series
The Seibu 6000 series is a Japanese electric multiple unit train type operated by Seibu Railway, commonly used for through-services on Tokyo subway lines.
-
E.
Tokyo Metro 10000 series
The Tokyo Metro 10000 series is a fleet of modern electric multiple unit trains operated by Tokyo Metro, known for serving through-services on several interconnected subway and private railway lines in the Tokyo area.
- 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: 81-717/714 series Target entity description: The 81-717/714 series is a widely used Soviet-designed electric multiple unit metro train type that has operated on numerous subway systems across the former Eastern Bloc and beyond.
-
A.
Tokyu 5000 series
The Tokyu 5000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation, primarily used for commuter services in the Tokyo metropolitan area.
-
B.
Tokyu 5050 series
The Tokyu 5050 series is a Japanese electric multiple unit commuter train type operated by Tokyu Corporation and used on through-services with Tokyo Metro and other railway lines in the Tokyo area.
-
C.
E231 series EMU
The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
-
D.
Seibu 6000 series
The Seibu 6000 series is a Japanese electric multiple unit train type operated by Seibu Railway, commonly used for through-services on Tokyo subway lines.
-
E.
Tokyo Metro 10000 series
The Tokyo Metro 10000 series is a fleet of modern electric multiple unit trains operated by Tokyo Metro, known for serving through-services on several interconnected subway and private railway lines in the Tokyo area.
- F. None of above. chosen
Statements (62)
| Predicate | Object |
|---|---|
| instanceOf |
electric multiple unit
ⓘ
metro train ⓘ rolling stock series ⓘ |
| brakeType |
electrodynamic braking
ⓘ
pneumatic braking ⓘ |
| carBodyMaterial | steel ⓘ |
| controlSystem | resistor-based traction control (original) ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| designedBy | Metrovagonmash ⓘ |
| designedFor | metro systems ⓘ |
| designedForPowerSupply | bottom-contact third rail ⓘ |
| designedForTrackGauge | 1,520 mm ⓘ |
| designedIn | Soviet Union ⓘ |
| doorConfiguration | three double-leaf doors per side (typical) ⓘ |
| doorType | sliding pocket doors ⓘ |
| enteredService |
around 1978
ⓘ
late 1970s ⓘ |
| hasCab | driver’s cab on 81-717 motor car ⓘ |
| hasCarType |
81-714 trailer car
ⓘ
81-717 motor car ⓘ |
| hasInteriorLayout | longitudinal seating ⓘ |
| hasModernizationProgram | life-extension and interior refurbishment in multiple cities ⓘ |
| hasVariant |
81-717.2K/714.2K
ⓘ
81-717.5/714.5 ⓘ 81-717.5A/714.5A ⓘ 81-717.5B/714.5B ⓘ 81-717/714 series self-linksurface differs ⓘ
surface form:
81-717.5M/714.5M
81-717/714 series self-linksurface differs ⓘ
surface form:
81-717.6K/714.6K
modernized 81-717/714 with asynchronous traction ⓘ |
| introducedAsSuccessorOf | E-series metro trains ⓘ |
| manufacturer |
Lviv Locomotive Repair Plant
ⓘ
Metrovagonmash ⓘ |
| notableFor |
high passenger capacity
ⓘ
robust construction ⓘ wide deployment across former Eastern Bloc metro systems ⓘ |
| operatedIn |
Eastern Bloc
ⓘ
surface form:
Eastern Bloc countries
post-Soviet states ⓘ |
| operatingVoltage |
750 V DC
ⓘ
825 V DC ⓘ |
| powerCollectionMethod | third rail ⓘ |
| tractionType | electric ⓘ |
| trainFormation | multiple unit ⓘ |
| typicalMaximumSpeed | 90 km/h ⓘ |
| usedFor | urban rapid transit ⓘ |
| usedIn |
Baku Metro
ⓘ
Baku suburban railway (converted units) ⓘ Bucharest Metro ⓘ Budapest Metro ⓘ Dnipro Metro ⓘ Kharkiv Metro ⓘ Kyiv Metro ⓘ Moscow Metro ⓘ Nizhny Novgorod Metro ⓘ Prague Metro ⓘ Saint Petersburg Metro ⓘ Samara Metro ⓘ Sofia Metro ⓘ Tashkent Metro ⓘ Tbilisi Metro ⓘ Warsaw Metro ⓘ Yekaterinburg Metro ⓘ Yerevan 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: 81-717/714 series Description of subject: The 81-717/714 series is a widely used Soviet-designed electric multiple unit metro train type that has operated on numerous subway systems across the former Eastern Bloc and beyond.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
81-717/714
this entity surface form:
81-717.5M/714.5M
this entity surface form:
81-717.6K/714.6K
this entity surface form:
81-717 metro car series
this entity surface form:
81-714 metro car series