Tamachi Line
E800271
The Tamachi Line is a Japanese railway line operated by Tokyu Corporation, serving as a local commuter route within the Tokyo metropolitan area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tamachi Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6154339 — 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: Tamachi Line Context triple: [Tokyu Corporation, operatesRailwayLine, Tamachi Line]
-
A.
Oimachi Line
The Oimachi Line is a commuter railway line in Tokyo, Japan, forming part of the Tokyu network and connecting central Tokyo with its southwestern suburbs.
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B.
Ikegami Line
The Ikegami Line is a commuter railway line in Tokyo, Japan, serving local neighborhoods with frequent urban transit as part of the Tokyu network.
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C.
Den-en-toshi Line
The Den-en-toshi Line is a major commuter railway line in the Greater Tokyo area that connects central Tokyo with suburban residential districts.
-
D.
Negishi Line
The Negishi Line is a railway line in the Greater Tokyo area of Japan operated by JR East, connecting Yokohama with Ōfuna and serving as part of the Keihin-Tōhoku/Negishi through service corridor.
-
E.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
- 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: Tamachi Line Target entity description: The Tamachi Line is a Japanese railway line operated by Tokyu Corporation, serving as a local commuter route within the Tokyo metropolitan area.
-
A.
Oimachi Line
The Oimachi Line is a commuter railway line in Tokyo, Japan, forming part of the Tokyu network and connecting central Tokyo with its southwestern suburbs.
-
B.
Ikegami Line
The Ikegami Line is a commuter railway line in Tokyo, Japan, serving local neighborhoods with frequent urban transit as part of the Tokyu network.
-
C.
Den-en-toshi Line
The Den-en-toshi Line is a major commuter railway line in the Greater Tokyo area that connects central Tokyo with suburban residential districts.
-
D.
Negishi Line
The Negishi Line is a railway line in the Greater Tokyo area of Japan operated by JR East, connecting Yokohama with Ōfuna and serving as part of the Keihin-Tōhoku/Negishi through service corridor.
-
E.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
- F. None of above. chosen
Statements (15)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| country | Japan ⓘ |
| electrification | overhead line ⓘ |
| hasHeadquartersOfOperator | Shibuya, Tokyo NERFINISHED ⓘ |
| languageOfSignage |
English
ⓘ
Japanese ⓘ |
| locatedIn |
Tokyo Prefecture
NERFINISHED
ⓘ
Tokyo metropolitan area NERFINISHED ⓘ |
| operator | Tokyu Corporation NERFINISHED ⓘ |
| owner | Tokyu Corporation NERFINISHED ⓘ |
| railwayType | commuter rail ⓘ |
| regionServed | Kantō region NERFINISHED ⓘ |
| serviceType | local ⓘ |
| 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: Tamachi Line Description of subject: The Tamachi Line is a Japanese railway line operated by Tokyu Corporation, serving as a local commuter route within the Tokyo metropolitan area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.