Jōetsu Line
E279244
The Jōetsu Line is a major railway line in Japan operated by JR East that connects the Kanto region with Niigata Prefecture through the mountainous interior of Honshu.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Joetsu Line | 1 |
| Jōetsu Line canonical | 1 |
| Jōetsu Line (suburban section) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1426950 — 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: Jōetsu Line Context triple: [Nagaoka, Niigata, Japan, servedBy, Jōetsu Line]
-
A.
Shinetsu Main Line
The Shinetsu Main Line is a major railway line in Japan operated by JR East that historically connected the Tokyo region with Niigata Prefecture across central Honshu.
-
B.
Utsunomiya Line
The Utsunomiya Line is a major JR East railway corridor in Japan connecting Tokyo with Utsunomiya and other cities in Tochigi Prefecture, serving as an important commuter and intercity route in the Kanto region.
-
C.
Takasaki Line
The Takasaki Line is a major railway line in Japan operated by JR East that connects the Tokyo metropolitan area with Saitama and Gunma Prefectures, serving as an important commuter and intercity route.
-
D.
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.
-
E.
Sakaisuji Line
The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
- 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: Jōetsu Line Target entity description: The Jōetsu Line is a major railway line in Japan operated by JR East that connects the Kanto region with Niigata Prefecture through the mountainous interior of Honshu.
-
A.
Shinetsu Main Line
The Shinetsu Main Line is a major railway line in Japan operated by JR East that historically connected the Tokyo region with Niigata Prefecture across central Honshu.
-
B.
Utsunomiya Line
The Utsunomiya Line is a major JR East railway corridor in Japan connecting Tokyo with Utsunomiya and other cities in Tochigi Prefecture, serving as an important commuter and intercity route in the Kanto region.
-
C.
Takasaki Line
The Takasaki Line is a major railway line in Japan operated by JR East that connects the Tokyo metropolitan area with Saitama and Gunma Prefectures, serving as an important commuter and intercity route.
-
D.
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.
-
E.
Sakaisuji Line
The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
heavy rail
ⓘ
railway line ⓘ |
| connects |
Kantō region
ⓘ
Niigata Prefecture NERFINISHED ⓘ |
| connectsWith |
Shinetsu Main Line
NERFINISHED
ⓘ
Takasaki Line NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification |
1,500 V DC overhead catenary
ⓘ
20 kV AC 50 Hz overhead catenary ⓘ |
| gauge |
1,067 mm
ⓘ
narrow gauge ⓘ |
| hasService |
limited express trains
ⓘ
local trains ⓘ rapid trains ⓘ |
| hasStructure |
bridges
ⓘ
mountain passes ⓘ tunnels ⓘ |
| locale |
Honshu
ⓘ
Kantō region ⓘ Niigata Prefecture NERFINISHED ⓘ |
| locatedIn | Japan ⓘ |
| notSameAs | Jōetsu Shinkansen ⓘ |
| opened | 1920 ⓘ |
| operator |
East Japan Railway Company
ⓘ
East Japan Railway Company ⓘ
surface form:
JR East
|
| owner | East Japan Railway Company ⓘ |
| ownerBeforeJNRBreakup | Japanese National Railways ⓘ |
| partOfNetwork |
JR East rail lines
ⓘ
surface form:
JR East conventional lines network
|
| passesThrough |
Yuzawa
ⓘ
surface form:
Echigo-Yuzawa area
Minakami area ⓘ |
| primaryFunction | inter-regional rail transport ⓘ |
| regionServed |
Gunma Prefecture
NERFINISHED
ⓘ
Niigata Prefecture NERFINISHED ⓘ Saitama Prefecture NERFINISHED ⓘ |
| status | in operation ⓘ |
| terminus |
Miyauchi Station
NERFINISHED
ⓘ
Takasaki Station NERFINISHED ⓘ |
| traverses | mountainous interior of Honshu ⓘ |
| usedFor |
freight transport
ⓘ
passenger transport ⓘ |
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: Jōetsu Line Description of subject: The Jōetsu Line is a major railway line in Japan operated by JR East that connects the Kanto region with Niigata Prefecture through the mountainous interior of Honshu.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Jōetsu Line (suburban section)
this entity surface form:
Joetsu Line