Tobu 9000 series
E132615
The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan area.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Tobu 9000 series canonical | 4 |
| Tobu 9050 series | 1 |
| Tobu commuter EMUs | 1 |
| Tōbu 9000 series | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1102261 — 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: Tobu 9000 series Context triple: [Tokyo Metro Fukutoshin Line, rollingStock, Tobu 9000 series]
-
A.
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.
-
B.
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.
-
C.
Toei Subway
Toei Subway is one of Tokyo's two main subway networks, operated by the Tokyo Metropolitan Bureau of Transportation and serving numerous urban and suburban areas across the city.
-
D.
Kinkisharyo light rail vehicles
Kinkisharyo light rail vehicles are modern electric multiple-unit trains manufactured by the Japanese company Kinki Sharyo, widely used in North American light rail systems for urban passenger transit.
-
E.
E233 series EMU
The E233 series EMU is a modern Japanese commuter train type operated by JR East, known for its high capacity, reliability, and widespread use on busy urban and suburban lines around Tokyo.
- 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: Tobu 9000 series Target entity description: The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan area.
-
A.
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.
-
B.
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.
-
C.
Toei Subway
Toei Subway is one of Tokyo's two main subway networks, operated by the Tokyo Metropolitan Bureau of Transportation and serving numerous urban and suburban areas across the city.
-
D.
Kinkisharyo light rail vehicles
Kinkisharyo light rail vehicles are modern electric multiple-unit trains manufactured by the Japanese company Kinki Sharyo, widely used in North American light rail systems for urban passenger transit.
-
E.
E233 series EMU
The E233 series EMU is a modern Japanese commuter train type operated by JR East, known for its high capacity, reliability, and widespread use on busy urban and suburban lines around Tokyo.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
commuter train
ⓘ
electric multiple unit ⓘ |
| brakeType |
electro-pneumatic brake
ⓘ
regenerative brake ⓘ |
| carBodyMaterial | aluminium alloy ⓘ |
| collectionMethod | pantograph ⓘ |
| country | Japan ⓘ |
| depot | Shiki Depot ⓘ |
| designedFor | inter-running services ⓘ |
| doorConfiguration | 3 pairs per side per car ⓘ |
| electricSystem | 1,500 V DC overhead catenary ⓘ |
| family |
Tobu 9000 series
self-linksurface differs
ⓘ
surface form:
Tobu commuter EMUs
|
| formation | 10-car sets ⓘ |
| interRunningWith |
Tokyo Metro Fukutoshin Line
ⓘ
Tokyo Metro Yurakuchō Line ⓘ
surface form:
Tokyo Metro Yurakucho Line
|
| introduced | 1981 ⓘ |
| manufacturer | Tokyu Car Corporation ⓘ |
| multipleWorking |
Tobu 9000 series
self-linksurface differs
ⓘ
surface form:
Tobu 9050 series
|
| numberOfCarsPerSet | 10 ⓘ |
| operator |
Tobu Railway
ⓘ
Tobu Tojo Line ⓘ through services onto Tokyo Metro lines ⓘ |
| powerType | electric ⓘ |
| railwayLineUsedOn | Tobu Tojo Line ⓘ |
| refurbishment | some sets refurbished for Fukutoshin Line through services ⓘ |
| serviceArea | Tokyo metropolitan area ⓘ |
| serviceType | all-stations commuter services ⓘ |
| successor |
Tobu 50050 series
ⓘ
surface form:
Tobu 50070 series
|
| trackGauge | 1,067 mm ⓘ |
| UICClassification | Bo′Bo′+2′2′+Bo′Bo′+2′2′+Bo′Bo′ (typical) ⓘ |
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: Tobu 9000 series Description of subject: The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan area.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tobu 9050 series
this entity surface form:
Tobu commuter EMUs
this entity surface form:
Tōbu 9000 series