Jōban Line
E690755
The Jōban Line is a major railway corridor in Japan operated by JR East, connecting central Tokyo with the northeastern Kanto and Tōhoku regions along the Pacific coast.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Jōban Line canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T5676917 — 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 Context triple: [E231 series EMU, usedOnLine, Jōban Line]
-
A.
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.
-
B.
Hanzōmon Line
The Hanzōmon Line is a Tokyo Metro subway line in Tokyo, Japan, connecting central districts with eastern and southwestern suburbs as part of the city’s urban rail network.
-
C.
Wakayamakō Line
The Wakayamakō Line is a railway line in Wakayama Prefecture, Japan, providing passenger service between central Wakayama and the Wakayama Port area.
-
D.
Yumesaki Line
The Yumesaki Line is a railway line in Osaka, Japan, primarily serving access to the Osaka Bay area including major attractions such as Universal Studios Japan.
-
E.
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.
- 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 Target entity description: The Jōban Line is a major railway corridor in Japan operated by JR East, connecting central Tokyo with the northeastern Kanto and Tōhoku regions along the Pacific coast.
-
A.
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.
-
B.
Hanzōmon Line
The Hanzōmon Line is a Tokyo Metro subway line in Tokyo, Japan, connecting central districts with eastern and southwestern suburbs as part of the city’s urban rail network.
-
C.
Wakayamakō Line
The Wakayamakō Line is a railway line in Wakayama Prefecture, Japan, providing passenger service between central Wakayama and the Wakayama Port area.
-
D.
Yumesaki Line
The Yumesaki Line is a railway line in Osaka, Japan, primarily serving access to the Osaka Bay area including major attractions such as Universal Studios Japan.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
heavy rail
ⓘ
railway line ⓘ |
| affectedBy |
2011 Tōhoku earthquake and tsunami
NERFINISHED
ⓘ
Fukushima Daiichi nuclear disaster NERFINISHED ⓘ |
| connectsCity |
Iwaki
NERFINISHED
ⓘ
Mito NERFINISHED ⓘ Sendai NERFINISHED ⓘ Tokyo NERFINISHED ⓘ |
| connectsTo |
Tōhoku Main Line
NERFINISHED
ⓘ
Tōkaidō Main Line NERFINISHED ⓘ Ueno-Tokyo Line NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification |
1,500 V DC overhead catenary
ⓘ
20 kV AC 50 Hz overhead catenary ⓘ |
| followsCoast | Pacific Ocean NERFINISHED ⓘ |
| hasService |
Jōban Line local services
ⓘ
Jōban Line rapid services ⓘ limited express services ⓘ |
| hasThroughServicesTo |
Shōnan–Shinjuku Line via Ueno-Tokyo Line
NERFINISHED
ⓘ
Tōkaidō Line via Ueno-Tokyo Line NERFINISHED ⓘ |
| historicalOperator |
Japanese Government Railways
NERFINISHED
ⓘ
Japanese National Railways NERFINISHED ⓘ |
| infrastructureType |
double track
ⓘ
single track sections ⓘ |
| languageOfName | Japanese ⓘ |
| locatedIn | Honshu ⓘ |
| nameInJapanese | 常磐線 NERFINISHED ⓘ |
| opened | late 19th century ⓘ |
| operator |
East Japan Railway Company
NERFINISHED
ⓘ
JR East NERFINISHED ⓘ |
| owner | East Japan Railway Company NERFINISHED ⓘ |
| partOfNetwork | JR East network NERFINISHED ⓘ |
| primaryUse |
commuter rail
ⓘ
intercity rail ⓘ |
| rollingStockType |
electric multiple unit
ⓘ
locomotive-hauled trains ⓘ |
| routeDirection | north–south ⓘ |
| servesRegion |
Chiba Prefecture
NERFINISHED
ⓘ
Fukushima Prefecture NERFINISHED ⓘ Ibaraki Prefecture NERFINISHED ⓘ Miyagi Prefecture NERFINISHED ⓘ Tokyo Metropolis NERFINISHED ⓘ |
| status | in operation ⓘ |
| terminus |
Iwaki Station
NERFINISHED
ⓘ
Nippori Station NERFINISHED ⓘ Sendai Station NERFINISHED ⓘ Ueno Station NERFINISHED ⓘ |
| trackGauge |
1,067 mm
ⓘ
Cape gauge ⓘ |
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 Description of subject: The Jōban Line is a major railway corridor in Japan operated by JR East, connecting central Tokyo with the northeastern Kanto and Tōhoku regions along the Pacific coast.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.