Tōkyū Tamagawa Line
E912282
The Tōkyū Tamagawa Line is a commuter railway line in Tokyo operated by Tokyu Corporation, connecting residential areas in Ōta Ward with major hubs on the city’s rail network.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tokyu Tamagawa Line | 3 |
| Tōkyū Tamagawa Line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6820159 — 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 Tamagawa Line Context triple: [Ōta, Tokyo, hasTransportation, Tōkyū Tamagawa Line]
-
A.
Tōkyū Ōimachi Line
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.
-
B.
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.
-
C.
Tokyu Meguro Line
The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
-
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.
-
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 Tamagawa Line Target entity description: The Tōkyū Tamagawa Line is a commuter railway line in Tokyo operated by Tokyu Corporation, connecting residential areas in Ōta Ward with major hubs on the city’s rail network.
-
A.
Tōkyū Ōimachi Line
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.
-
B.
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.
-
C.
Tokyu Meguro Line
The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
-
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.
-
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
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line in Japan ⓘ |
| city | Tokyo ⓘ |
| connectsResidentialAreasTo | major rail hubs in Tokyo ⓘ |
| connectsTo |
JR Keihin-Tōhoku Line
NERFINISHED
ⓘ
JR Shōnan–Shinjuku Line NERFINISHED ⓘ JR Tōkaidō Main Line NERFINISHED ⓘ JR Yokosuka Line NERFINISHED ⓘ Keikyū Main Line NERFINISHED ⓘ Tōkyū Ikegami Line NERFINISHED ⓘ Tōkyū Meguro Line NERFINISHED ⓘ Tōkyū Tōyoko Line NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | 1500 V DC overhead catenary ⓘ |
| electrified | yes ⓘ |
| fareSystem | Tokyu fare system ⓘ |
| formerName | Tamagawa Line NERFINISHED ⓘ |
| hasJapaneseName | 東急多摩川線 ⓘ |
| hasRomajiName | Tōkyū Tamagawa-sen NERFINISHED ⓘ |
| hasStation |
Kamata Station
NERFINISHED
ⓘ
Musashi-Nitta Station NERFINISHED ⓘ Numabe Station NERFINISHED ⓘ Shimo-Maruko Station NERFINISHED ⓘ Tamagawa Station NERFINISHED ⓘ Unoki Station NERFINISHED ⓘ Yaguchi-no-Watashi Station NERFINISHED ⓘ |
| lineCode | TM ⓘ |
| lineLength | 5.6 km ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| numberOfStations | 7 ⓘ |
| openingDate | 1923-11-01 ⓘ |
| operator | Tokyu Corporation ⓘ |
| owner | Tokyu Corporation ⓘ |
| primaryFunction | commuter transport ⓘ |
| railwaySignColor | light green ⓘ |
| railwaySystem | Tokyu railway network ⓘ |
| region | Kantō region ⓘ |
| reorganizedFrom | former Tōkyū Tamagawa Line network ⓘ |
| rollingStock |
Tokyu 1000 series EMU
ⓘ
Tokyu 7000 series EMU ⓘ
linked to:
Tokyu 7000 series
|
| servesArea | residential districts of Ōta Ward ⓘ |
| servesWard | Ōta, Tokyo ⓘ |
| serviceType | all-stations (local) services ⓘ |
| terminus |
Kamata Station
NERFINISHED
ⓘ
Tamagawa Station NERFINISHED ⓘ |
| ticketing | IC cards accepted ⓘ |
| trackConfiguration | double track ⓘ |
| trackGauge | 1067 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: Tōkyū Tamagawa Line Description of subject: The Tōkyū Tamagawa Line is a commuter railway line in Tokyo operated by Tokyu Corporation, connecting residential areas in Ōta Ward with major hubs on the city’s rail network.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Ota, Japan
linked to: Tōkyū Tamagawa Line
linked to: Tōkyū Tamagawa Line
linked to: Tōkyū Tamagawa Line