Tokyu 7000 series
E794606
The Tokyu 7000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation and formerly used on Tokyo Metro’s Hibiya Line, known for its stainless-steel body and commuter service design.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tokyu 7000 series EMU | 3 |
| Tokyu 7000 series canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9343465 — 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: Tokyu 7000 series Context triple: [Tokyo Metro Hibiya Line, rollingStock, Tokyu 7000 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.
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.
-
D.
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.
-
E.
Tokyo Metro 17000 series
The Tokyo Metro 17000 series is a modern electric multiple unit train operated by Tokyo Metro, designed for through-services on lines such as the Fukutoshin and Yurakucho Lines with improved energy efficiency and passenger comfort.
- 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: Tokyu 7000 series Target entity description: The Tokyu 7000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation and formerly used on Tokyo Metro’s Hibiya Line, known for its stainless-steel body and commuter service design.
-
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.
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.
-
D.
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.
-
E.
Tokyo Metro 17000 series
The Tokyo Metro 17000 series is a modern electric multiple unit train operated by Tokyo Metro, designed for through-services on lines such as the Fukutoshin and Yurakucho Lines with improved energy efficiency and passenger comfort.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese train type
ⓘ
commuter train ⓘ electric multiple unit ⓘ |
| bodyMaterial | stainless steel ⓘ |
| brakeType |
air brakes
ⓘ
electric braking ⓘ |
| carBodyConstruction | all-steel stainless ⓘ |
| category |
Japanese EMUs
ⓘ
Tokyu rolling stock ⓘ |
| country | Japan ⓘ |
| coupling | automatic couplers ⓘ |
| designedBy | Tokyu Corporation ⓘ |
| designedFor | high‑density urban commuting ⓘ |
| doorType | sliding doors ⓘ |
| electrificationSystem | 1,500 V DC overhead line ⓘ |
| formerOperator | Tokyo Metro ⓘ |
| gauge | 1,067 mm ⓘ |
| multipleWorking | electric multiple unit formation ⓘ |
| operatedInCity | Tokyo ⓘ |
| operator | Tokyu Corporation ⓘ |
| powerType | electric multiple unit ⓘ |
| railwayCompanyType | private railway operator ⓘ |
| region |
Kanto region
ⓘ
linked to:
Kantō region
|
| servicePattern | stopping commuter services ⓘ |
| serviceType | commuter service ⓘ |
| trackType | narrow gauge track ⓘ |
| traction | electric ⓘ |
| trainControl | driver‑operated cab ⓘ |
| usedFor | passenger transport ⓘ |
| usedOnLine | Tokyo Metro Hibiya 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: Tokyu 7000 series Description of subject: The Tokyu 7000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation and formerly used on Tokyo Metro’s Hibiya Line, known for its stainless-steel body and commuter service design.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Tokyu 7000 series
linked to: Tokyu 7000 series
linked to: Tokyu 7000 series