JR East Joban Line
E757157
The JR East Joban Line is a major railway line in Japan operated by East Japan Railway Company, running between central Tokyo and the Tohoku region along the Pacific coast.
All labels observed (3)
| Label | Occurrences |
|---|---|
| JR East Joban Line canonical | 4 |
| JR East Jōban Line | 2 |
| JR East Joban Line (through services) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8727346 — 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 Joban Line Context triple: [Kita-Senju, hasRailConnection, JR East Joban 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.
JR East Nambu Line
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.
-
C.
JR Chuo-Sobu Line
The JR Chuo-Sobu Line is a major local railway line in Tokyo and surrounding areas operated by JR East, connecting central city districts and numerous commuter neighborhoods.
-
D.
JR Tōzai Line
The JR Tōzai Line is a commuter rail line in the Kansai region of Japan operated by West Japan Railway Company (JR West), connecting Kyōbashi in Osaka with Amagasaki in Hyōgo via central Osaka.
-
E.
JR West Hanwa Line
The JR West Hanwa Line is a major railway line in Japan’s Kansai region operated by West Japan Railway Company, connecting central Osaka with southern Osaka Prefecture and Wakayama.
- 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 Joban Line Target entity description: The JR East Joban Line is a major railway line in Japan operated by East Japan Railway Company, running between central Tokyo and the Tohoku region along the Pacific coast.
-
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.
JR East Nambu Line
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.
-
C.
JR Chuo-Sobu Line
The JR Chuo-Sobu Line is a major local railway line in Tokyo and surrounding areas operated by JR East, connecting central city districts and numerous commuter neighborhoods.
-
D.
JR Tōzai Line
The JR Tōzai Line is a commuter rail line in the Kansai region of Japan operated by West Japan Railway Company (JR West), connecting Kyōbashi in Osaka with Amagasaki in Hyōgo via central Osaka.
-
E.
JR West Hanwa Line
The JR West Hanwa Line is a major railway line in Japan’s Kansai region operated by West Japan Railway Company, connecting central Osaka with southern Osaka Prefecture and Wakayama.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
heavy rail
ⓘ
railway line ⓘ |
| affectedByEvent |
2011 Tohoku earthquake and tsunami
ⓘ
linked to:
2011 Tōhoku earthquake and tsunami
|
| connectsCity |
Iwaki
ⓘ
Mito ⓘ Sendai ⓘ Tokyo ⓘ |
| connectsRegion |
Kanto region
ⓘ
linked to:
Kanto
Tohoku region ⓘ
linked to:
Tohoku
|
| country | Japan ⓘ |
| electrification | overhead catenary ⓘ |
| followsCoastOf | Pacific Ocean ⓘ |
| hasAlternativeName | Joban Line ⓘ |
| hasSection |
rural section in Tohoku region
ⓘ
suburban commuter section in Greater Tokyo ⓘ |
| hasService |
limited express trains
ⓘ
local trains ⓘ rapid trains ⓘ |
| historicalOperator | Japanese National Railways ⓘ |
| lineType |
commuter rail
ⓘ
intercity rail ⓘ |
| locatedIn | Honshu ⓘ |
| namedAfter | Joban region ⓘ |
| openedForService | 19th century ⓘ |
| operator |
East Japan Railway Company
ⓘ
JR East ⓘ
linked to:
East Japan Railway Company
|
| partOfNetwork | JR East network ⓘ |
| passesThroughPrefecture |
Chiba Prefecture
NERFINISHED
ⓘ
Fukushima Prefecture ⓘ Ibaraki Prefecture ⓘ Miyagi Prefecture ⓘ Tokyo Prefecture ⓘ |
| runsDirection | north–south ⓘ |
| servesArea |
Joban coastal area
ⓘ
Tokyo metropolitan area ⓘ |
| terminus |
Iwaki Station
NERFINISHED
ⓘ
Mito Station NERFINISHED ⓘ Nippori Station ⓘ Sendai Station ⓘ Toride Station NERFINISHED ⓘ Tsuchiura Station NERFINISHED ⓘ Ueno Station ⓘ |
| trackGauge |
1067 mm
ⓘ
Cape gauge ⓘ |
| usesRollingStockType |
E231 series
ⓘ
linked to:
E231 series EMU
E233 series ⓘ
linked to:
E233 series EMU
E531 series ⓘ limited express rolling stock ⓘ |
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 Joban Line Description of subject: The JR East Joban Line is a major railway line in Japan operated by East Japan Railway Company, running between central Tokyo and the Tohoku region along the Pacific coast.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: JR East Joban Line
linked to: JR East Joban Line
linked to: JR East Joban Line