JR East Nambu Line
E346140
The JR East Nambu Line is a commuter rail line in the Tokyo–Kawasaki area of Japan that connects multiple suburban communities and facilitates daily passenger transit across the Tama region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| JR East Nambu Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1742817 — 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: JR East Nambu Line Context triple: [Tama, servedBy, JR East Nambu Line]
-
A.
JR Saikyo Line
The JR Saikyo Line is a major commuter rail line in the Tokyo metropolitan area operated by JR East, connecting central Tokyo with Saitama Prefecture and serving key hubs such as Shibuya and Shinjuku.
-
B.
Tokyo Metro Namboku Line
The Tokyo Metro Namboku Line is a north–south subway line in Tokyo operated by Tokyo Metro, known for its deep underground stations and through-services to other railway lines.
-
C.
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.
-
D.
Tobu Nikko Line
The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
-
E.
JR East Ōme Line
The JR East Ōme Line is a railway line in western Tokyo operated by East Japan Railway Company, connecting urban areas with the Tama region and the foothills of the Okutama area.
- 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: JR East Nambu Line Target entity description: The JR East Nambu Line is a commuter rail line in the Tokyo–Kawasaki area of Japan that connects multiple suburban communities and facilitates daily passenger transit across the Tama region.
-
A.
JR Saikyo Line
The JR Saikyo Line is a major commuter rail line in the Tokyo metropolitan area operated by JR East, connecting central Tokyo with Saitama Prefecture and serving key hubs such as Shibuya and Shinjuku.
-
B.
Tokyo Metro Namboku Line
The Tokyo Metro Namboku Line is a north–south subway line in Tokyo operated by Tokyo Metro, known for its deep underground stations and through-services to other railway lines.
-
C.
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.
-
D.
Tobu Nikko Line
The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
-
E.
JR East Ōme Line
The JR East Ōme Line is a railway line in western Tokyo operated by East Japan Railway Company, connecting urban areas with the Tama region and the foothills of the Okutama area.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line in Japan ⓘ |
| connects |
Kawasaki Station
NERFINISHED
ⓘ
Tachikawa Station NERFINISHED ⓘ |
| connectsWith |
JR Chūō Line (Rapid)
NERFINISHED
ⓘ
JR Chūō-Sōbu Line NERFINISHED ⓘ JR Keihin-Tōhoku Line NERFINISHED ⓘ JR Musashino Line NERFINISHED ⓘ JR Tokaido Main Line NERFINISHED ⓘ JR Yokosuka Line NERFINISHED ⓘ Keikyū Main Line ⓘ
surface form:
Keikyū Main Line (via Kawasaki)
Keio Sagamihara Line ⓘ
surface form:
Keio Line (via Bubaigawara)
Odakyu Odawara Line ⓘ
surface form:
Odakyū Odawara Line (via Noborito)
Seibu Tamagawa Line (via Musashi-Sakai branch connection area) ⓘ |
| country | Japan ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| facilitates | daily passenger transit across the Tama region ⓘ |
| hasOwner |
East Japan Railway Company
ⓘ
surface form:
JR East
|
| locatedIn |
Japan
ⓘ
Kantō region ⓘ Kawasaki, Kanagawa ⓘ
surface form:
Kawasaki, Kanagawa Prefecture
Tokyo Prefecture ⓘ
surface form:
Tokyo Metropolis
|
| operator |
East Japan Railway Company
ⓘ
East Japan Railway Company ⓘ
surface form:
JR East
|
| owner | East Japan Railway Company ⓘ |
| partOfNetwork |
JR East urban network
ⓘ
surface form:
JR East urban rail network
|
| passesThrough |
Fuchū, Tokyo
NERFINISHED
ⓘ
Inagi, Tokyo NERFINISHED ⓘ Noborito area ⓘ |
| primaryUse | commuter traffic ⓘ |
| railGauge | 1,067 mm ⓘ |
| railwaySignificance | important orbital route in western Greater Tokyo ⓘ |
| regionServed |
Tokyo metropolitan area
ⓘ
surface form:
Tokyo–Kawasaki urban area
|
| role | suburban commuter corridor ⓘ |
| servesArea | Tama region ⓘ |
| serviceType |
local trains
ⓘ
rapid trains ⓘ |
| terminus |
Kawasaki Station
NERFINISHED
ⓘ
Tachikawa Station NERFINISHED ⓘ |
| trackConfiguration | mostly double track ⓘ |
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: JR East Nambu Line Description of subject: The JR East Nambu Line is a commuter rail line in the Tokyo–Kawasaki area of Japan that connects multiple suburban communities and facilitates daily passenger transit across the Tama region.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.