Jōban Line (Rapid)
E1032691
The Jōban Line (Rapid) is a fast suburban rail service in the Tokyo area operated by JR East, providing limited-stop connections between central Tokyo and the northeastern suburbs along the Jōban corridor.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Joban Line Rapid Service | 2 |
| Jōban Line (Rapid) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10520807 — 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: Jōban Line (Rapid) Context triple: [Nippori Station, servedByLine, Jōban Line (Rapid)]
-
A.
Sōbu Line Rapid
The Sōbu Line Rapid is a Japanese railway service operated by JR East that provides fast commuter and intercity connections between central Tokyo and eastern Chiba Prefecture.
-
B.
Karasuma Line
The Karasuma Line is a major Kyoto Municipal Subway line running north–south through Kyoto, connecting key districts and transportation hubs including Kyoto Station.
-
C.
Tsurumi Line
The Tsurumi Line is a short commuter rail line in Kanagawa Prefecture, Japan, primarily serving industrial and port areas along Tokyo Bay and operated by East Japan Railway Company (JR East).
-
D.
Fukutoshin Line
The Fukutoshin Line is a Tokyo Metro subway line in Tokyo, Japan, connecting major commercial and residential districts such as Shibuya, Shinjuku, and Ikebukuro.
-
E.
Marunouchi Line
The Marunouchi Line is one of Tokyo’s main subway lines, forming a central loop and radial route that connects key business, shopping, and transit hubs across the city.
- 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: Jōban Line (Rapid) Target entity description: The Jōban Line (Rapid) is a fast suburban rail service in the Tokyo area operated by JR East, providing limited-stop connections between central Tokyo and the northeastern suburbs along the Jōban corridor.
-
A.
Sōbu Line Rapid
The Sōbu Line Rapid is a Japanese railway service operated by JR East that provides fast commuter and intercity connections between central Tokyo and eastern Chiba Prefecture.
-
B.
Karasuma Line
The Karasuma Line is a major Kyoto Municipal Subway line running north–south through Kyoto, connecting key districts and transportation hubs including Kyoto Station.
-
C.
Tsurumi Line
The Tsurumi Line is a short commuter rail line in Kanagawa Prefecture, Japan, primarily serving industrial and port areas along Tokyo Bay and operated by East Japan Railway Company (JR East).
-
D.
Fukutoshin Line
The Fukutoshin Line is a Tokyo Metro subway line in Tokyo, Japan, connecting major commercial and residential districts such as Shibuya, Shinjuku, and Ikebukuro.
-
E.
Marunouchi Line
The Marunouchi Line is one of Tokyo’s main subway lines, forming a central loop and radial route that connects key business, shopping, and transit hubs across the city.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail service
ⓘ
rapid service ⓘ |
| connects |
central Tokyo
ⓘ
northeastern suburbs of Tokyo ⓘ |
| corridor | Jōban corridor ⓘ |
| country | Japan ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| fareSystem | JR East fare system ⓘ |
| hasService |
local trains (shared corridor)
ⓘ
rapid trains ⓘ |
| lineColor | green (JR East Jōban Line color family) ⓘ |
| locatedIn |
Kantō region
ⓘ
Tokyo Metropolis NERFINISHED ⓘ |
| operator |
East Japan Railway Company
ⓘ
JR East NERFINISHED ⓘ |
| owner | East Japan Railway Company NERFINISHED ⓘ |
| partOf | Jōban Line NERFINISHED ⓘ |
| primaryFunction |
commuter transport
ⓘ
suburban access to central Tokyo ⓘ |
| railwayGauge | 1,067 mm ⓘ |
| regionServed | Tokyo metropolitan area NERFINISHED ⓘ |
| rollingStockOperator | JR East NERFINISHED ⓘ |
| safetySystem | ATS (automatic train stop) NERFINISHED ⓘ |
| servicePattern | rapid ⓘ |
| serviceType |
limited-stop
ⓘ
suburban rail ⓘ |
| terminus |
Ueno Station
NERFINISHED
ⓘ
stations in northeastern suburbs of Tokyo ⓘ |
| ticketing | accepts IC cards such as Suica ⓘ |
| usesTracksOf | Jōban Line 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: Jōban Line (Rapid) Description of subject: The Jōban Line (Rapid) is a fast suburban rail service in the Tokyo area operated by JR East, providing limited-stop connections between central Tokyo and the northeastern suburbs along the Jōban corridor.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Joban Line Rapid Service
this entity surface form:
Joban Line Rapid Service