Seibu Toshima Line
E691751
The Seibu Toshima Line is a short commuter railway line in Tokyo, Japan, operated by Seibu Railway and connecting Nerima and Toshimaen in the city’s northwest.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Seibu Toshima Line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5777037 — 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: Seibu Toshima Line Context triple: [Tokyo Metro 7000 series, throughServiceToLine, Seibu Toshima Line]
-
A.
Seibu Yurakucho Line
The Seibu Yurakucho Line is a commuter railway line in Tokyo operated by Seibu Railway, linking the Seibu Ikebukuro Line with central Tokyo subway networks.
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B.
Toei Oedo Line
The Toei Oedo Line is a major Tokyo subway loop and radial line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central districts with many key commercial and residential areas.
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C.
Tōkyū Ikegami Line
The Tōkyū Ikegami Line is a commuter railway line in Tokyo operated by Tokyu Corporation, connecting residential areas in Ōta Ward with central districts such as Shinagawa.
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D.
Rinkai Line
The Rinkai Line is a Tokyo railway line that connects central Tokyo with the waterfront Odaiba area and other bayside districts.
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E.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
- 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: Seibu Toshima Line Target entity description: The Seibu Toshima Line is a short commuter railway line in Tokyo, Japan, operated by Seibu Railway and connecting Nerima and Toshimaen in the city’s northwest.
-
A.
Seibu Yurakucho Line
The Seibu Yurakucho Line is a commuter railway line in Tokyo operated by Seibu Railway, linking the Seibu Ikebukuro Line with central Tokyo subway networks.
-
B.
Toei Oedo Line
The Toei Oedo Line is a major Tokyo subway loop and radial line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central districts with many key commercial and residential areas.
-
C.
Tōkyū Ikegami Line
The Tōkyū Ikegami Line is a commuter railway line in Tokyo operated by Tokyu Corporation, connecting residential areas in Ōta Ward with central districts such as Shinagawa.
-
D.
Rinkai Line
The Rinkai Line is a Tokyo railway line that connects central Tokyo with the waterfront Odaiba area and other bayside districts.
-
E.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| connects |
Nerima
NERFINISHED
ⓘ
Toshimaen NERFINISHED ⓘ |
| country | Japan ⓘ |
| depotUsed | Seibu Railway depots ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| electrified | yes ⓘ |
| fareSystem | Seibu Railway fare system ⓘ |
| hasStation |
Nerima Station
NERFINISHED
ⓘ
Toshimaen Station NERFINISHED ⓘ |
| hasThroughConnection | Seibu Ikebukuro Line at Nerima NERFINISHED ⓘ |
| lineLength | approximately 1.0 km ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| locatedInWard | Nerima Ward NERFINISHED ⓘ |
| numberOfTracks | double track ⓘ |
| operator | Seibu Railway NERFINISHED ⓘ |
| owner | Seibu Railway NERFINISHED ⓘ |
| partOfNetwork | Seibu Railway network NERFINISHED ⓘ |
| primaryUse | commuter transport ⓘ |
| railwaySignalling | automatic signalling ⓘ |
| railwayType | heavy rail ⓘ |
| regionServed | northwestern Tokyo ⓘ |
| rollingStockOperator | Seibu Railway NERFINISHED ⓘ |
| serviceType | local ⓘ |
| terminus |
Nerima Station
NERFINISHED
ⓘ
Toshimaen Station NERFINISHED ⓘ |
| trackGauge | 1,067 mm ⓘ |
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: Seibu Toshima Line Description of subject: The Seibu Toshima Line is a short commuter railway line in Tokyo, Japan, operated by Seibu Railway and connecting Nerima and Toshimaen in the city’s northwest.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.