Tokyo Metro 8000 series
E141542
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tokyo Metro 8000 series canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1183169 — 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: Tokyo Metro 8000 series Context triple: [Tokyo Metro Hanzomon Line, rollingStock, Tokyo Metro 8000 series]
-
A.
Tokyo Metro 7000 series
The Tokyo Metro 7000 series is a Japanese electric multiple unit train type operated by Tokyo Metro, primarily used on busy commuter subway lines in Tokyo.
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B.
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.
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C.
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.
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D.
Tokyo Metro 1000 series
The Tokyo Metro 1000 series is a modern electric multiple unit train used on Tokyo’s subway system, designed with retro-inspired styling that pays homage to the original Ginza Line cars while incorporating contemporary technology and comfort features.
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E.
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.
- 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: Tokyo Metro 8000 series Target entity description: 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.
-
A.
Tokyo Metro 7000 series
The Tokyo Metro 7000 series is a Japanese electric multiple unit train type operated by Tokyo Metro, primarily used on busy commuter subway lines in Tokyo.
-
B.
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.
-
C.
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.
-
D.
Tokyo Metro 1000 series
The Tokyo Metro 1000 series is a modern electric multiple unit train used on Tokyo’s subway system, designed with retro-inspired styling that pays homage to the original Ginza Line cars while incorporating contemporary technology and comfort features.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
commuter train
ⓘ
electric multiple unit ⓘ |
| airConditioning | equipped ⓘ |
| brakeType |
electro-pneumatic brake
ⓘ
regenerative brake ⓘ |
| carBodyMaterial | aluminium alloy ⓘ |
| collectionMethod | pantograph ⓘ |
| controlMethod |
VVVF inverter control (after refurbishment on some sets)
ⓘ
chopper control (as built) ⓘ |
| country | Japan ⓘ |
| couplingType | Shibata-type coupler ⓘ |
| depot |
Kikuna Depot
ⓘ
Saginuma Depot ⓘ |
| designedFor |
through services with Tobu lines
ⓘ
through services with Tokyu Den-en-toshi Line ⓘ |
| doorConfiguration | 4 pairs per side per car ⓘ |
| electrificationSystem | 1500 V DC overhead catenary ⓘ |
| enteredService | 1981 ⓘ |
| floorType | longitudinal seating in most cars ⓘ |
| formation | 10-car sets ⓘ |
| introduced | 1981 ⓘ |
| introducedFor | Hanzomon Line full 10-car operation ⓘ |
| manufacturer |
Kawasaki Heavy Industries
ⓘ
Nippon Sharyo ⓘ Tokyu Car Corporation ⓘ |
| maximumSpeed | 110 km/h ⓘ |
| numberOfCarsPerSet | 10 ⓘ |
| operator |
Tokyo Metro
ⓘ
Tokyo Metro Hanzomon Line through services consortium ⓘ |
| operatorPredecessor | TRTA ⓘ |
| originalOperator | Teito Rapid Transit Authority ⓘ |
| powerOutput | about 160 kW per motor ⓘ |
| refurbishment |
front-end design modification on some sets
ⓘ
installation of LED destination indicators ⓘ interior renewal with new seating and flooring ⓘ major refurbishment program from late 1990s ⓘ upgraded air-conditioning units ⓘ |
| safetySystem |
Tobu ATS
ⓘ
Tokyo Metro CS-ATC ⓘ Tokyu ATS ⓘ |
| serviceArea |
Tokyo metropolitan area
ⓘ
surface form:
Greater Tokyo Area
|
| serviceType | through-service capable ⓘ |
| successor |
Tokyo Metro 08 series
ⓘ
Tokyo Metro 18000 series ⓘ |
| trackGauge | 1067 mm ⓘ |
| usedOnLine |
Tobu Isesaki Line
ⓘ
Tobu Skytree Line ⓘ Tokyo Metro Hanzomon Line ⓘ Tokyu Den-en-toshi Line ⓘ |
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: Tokyo Metro 8000 series Description of subject: 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.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.