Tōkyū Ōimachi Line
E598596
The Tōkyū Ōimachi Line is a major commuter railway line in Tokyo operated by Tokyu Corporation, connecting central Tokyo areas such as Ōimachi and Futako-Tamagawa with surrounding residential districts.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tokyu Oimachi Line | 1 |
| Tōkyū Ōimachi Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3530419 — 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: Tōkyū Ōimachi Line Context triple: [Shinagawa, servedByRailwayLine, Tōkyū Ōimachi Line]
-
A.
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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B.
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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C.
Musashino Line
The Musashino Line is a major JR East commuter rail line in the Greater Tokyo area that forms an orbital route through the suburbs, connecting key residential and commercial districts.
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D.
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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E.
Toei Mita Line
The Toei Mita Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running north–south through the city and connecting central Tokyo with its northern suburbs.
- 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: Tōkyū Ōimachi Line Target entity description: The Tōkyū Ōimachi Line is a major commuter railway line in Tokyo operated by Tokyu Corporation, connecting central Tokyo areas such as Ōimachi and Futako-Tamagawa with surrounding residential districts.
-
A.
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.
-
B.
Rinkai Line
The Rinkai Line is a Tokyo railway line that connects central Tokyo with the waterfront Odaiba area and other bayside districts.
-
C.
Musashino Line
The Musashino Line is a major JR East commuter rail line in the Greater Tokyo area that forms an orbital route through the suburbs, connecting key residential and commercial districts.
-
D.
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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E.
Keio Line
The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line in Japan ⓘ |
| connects |
Futako-Tamagawa Station
NERFINISHED
ⓘ
residential districts in southern Tokyo ⓘ Ōimachi Station NERFINISHED ⓘ |
| connectsToLine |
JR Keihin-Tōhoku Line at Ōimachi
ⓘ
Tōkyū Den-en-toshi Line at Futako-Tamagawa NERFINISHED ⓘ Tōkyū Den-en-toshi Line at Mizonokuchi NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| gauge | 1,067 mm ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| operator | Tokyu Corporation NERFINISHED ⓘ |
| owner | Tokyu Corporation NERFINISHED ⓘ |
| partOfNetwork | Tokyu railway network NERFINISHED ⓘ |
| primaryUse | commuter transport ⓘ |
| regionServed |
Ota Ward
NERFINISHED
ⓘ
Setagaya Ward NERFINISHED ⓘ central Tokyo NERFINISHED ⓘ |
| serviceType |
express
ⓘ
limited express ⓘ local ⓘ |
| terminus |
Mizonokuchi Station
NERFINISHED
ⓘ
Ōimachi Station NERFINISHED ⓘ |
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: Tōkyū Ōimachi Line Description of subject: The Tōkyū Ōimachi Line is a major commuter railway line in Tokyo operated by Tokyu Corporation, connecting central Tokyo areas such as Ōimachi and Futako-Tamagawa with surrounding residential districts.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tokyu Oimachi Line