Joban Line
E621218
The Joban Line is a major railway line in eastern Japan operated by JR East that runs along the Pacific coast, connecting the Tokyo area with Fukushima and Miyagi Prefectures.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Joban Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6322270 — 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: Joban Line Context triple: [Miyagi Prefecture, railwayServedBy, Joban Line]
-
A.
Kada Line
The Kada Line is a regional railway line in Wakayama Prefecture, Japan, providing local passenger service between Wakayamashi and Kada along the coast.
-
B.
JR Negishi Line
The JR Negishi Line is a railway line in the Yokohama area of Japan that connects central Yokohama with surrounding districts and links to major JR lines serving the Greater Tokyo region.
-
C.
Yamatoji Line
The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route in the Kansai region.
-
D.
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.
-
E.
Kosei Line
The Kosei Line is a railway line in Japan operated by JR West that runs along the western shore of Lake Biwa, connecting Kyoto with the Shiga and Fukui prefecture areas.
- 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: Joban Line Target entity description: The Joban Line is a major railway line in eastern Japan operated by JR East that runs along the Pacific coast, connecting the Tokyo area with Fukushima and Miyagi Prefectures.
-
A.
Kada Line
The Kada Line is a regional railway line in Wakayama Prefecture, Japan, providing local passenger service between Wakayamashi and Kada along the coast.
-
B.
JR Negishi Line
The JR Negishi Line is a railway line in the Yokohama area of Japan that connects central Yokohama with surrounding districts and links to major JR lines serving the Greater Tokyo region.
-
C.
Yamatoji Line
The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route in the Kansai region.
-
D.
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.
-
E.
Kosei Line
The Kosei Line is a railway line in Japan operated by JR West that runs along the western shore of Lake Biwa, connecting Kyoto with the Shiga and Fukui prefecture areas.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
heavy rail
ⓘ
railway line ⓘ |
| affectedBy | 2011 Tohoku earthquake and tsunami NERFINISHED ⓘ |
| connectsTo |
Chiba Prefecture
NERFINISHED
ⓘ
Fukushima Prefecture NERFINISHED ⓘ Ibaraki Prefecture NERFINISHED ⓘ Joban Line Local services in Tokyo area ⓘ Miyagi Prefecture NERFINISHED ⓘ Tokyo Metro Chiyoda Line (via through services) NERFINISHED ⓘ Tokyo Metropolis NERFINISHED ⓘ Ueno–Tokyo Line services NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | overhead catenary ⓘ |
| followsCoastOf | Pacific Ocean NERFINISHED ⓘ |
| hasSectionType |
intercity line
ⓘ
urban commuter line ⓘ |
| hasService |
limited express trains
ⓘ
local trains ⓘ rapid trains ⓘ |
| historicalOperator | Japanese National Railways NERFINISHED ⓘ |
| locatedIn | eastern Japan ⓘ |
| notableService |
Hitachi limited express
NERFINISHED
ⓘ
Tokiwa limited express NERFINISHED ⓘ |
| opened | 1896 ⓘ |
| operator |
East Japan Railway Company
NERFINISHED
ⓘ
JR East NERFINISHED ⓘ |
| owner | East Japan Railway Company NERFINISHED ⓘ |
| partOfNetwork | JR East network NERFINISHED ⓘ |
| reopenedSection | completed by 2020 after disaster damage ⓘ |
| serves |
Greater Tokyo Area
NERFINISHED
ⓘ
Joban region NERFINISHED ⓘ |
| status | in operation ⓘ |
| terminus |
Sendai Station
NERFINISHED
ⓘ
Ueno Station NERFINISHED ⓘ |
| trackGauge |
1067 mm
ⓘ
Cape gauge ⓘ |
| usesRollingStock |
E531 series EMU
NERFINISHED
ⓘ
E657 series EMU 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: Joban Line Description of subject: The Joban Line is a major railway line in eastern Japan operated by JR East that runs along the Pacific coast, connecting the Tokyo area with Fukushima and Miyagi Prefectures.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.