JR Central conventional lines
E306034
JR Central conventional lines are the network of standard (non–Shinkansen) passenger and freight railway lines operated by Central Japan Railway Company across the Chūbu region of Japan.
All labels observed (6)
| Label | Occurrences |
|---|---|
| JR Central Shinkansen network | 1 |
| JR Central conventional lines canonical | 1 |
| JR Central conventional network | 1 |
| JR Central lines | 1 |
| JR Central network | 1 |
| JR conventional lines network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2868499 — 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 Central conventional lines Context triple: [Central Japan Railway Company, railBrand, JR Central conventional lines]
-
A.
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.
-
B.
JR Yamanote Line
The JR Yamanote Line is a busy circular railway loop in central Tokyo that connects many of the city’s major urban hubs and transit interchanges.
-
C.
JR East urban network
The JR East urban network is a dense system of commuter and suburban railway lines in the Greater Tokyo and surrounding metropolitan areas operated by East Japan Railway Company (JR East).
-
D.
Urban Network (JR West)
Urban Network (JR West) is the branding for JR West’s dense commuter and regional rail system serving the greater Kansai metropolitan area and surrounding regions in western Japan.
-
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 Central conventional lines Target entity description: JR Central conventional lines are the network of standard (non–Shinkansen) passenger and freight railway lines operated by Central Japan Railway Company across the Chūbu region of Japan.
-
A.
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.
-
B.
JR Yamanote Line
The JR Yamanote Line is a busy circular railway loop in central Tokyo that connects many of the city’s major urban hubs and transit interchanges.
-
C.
JR East urban network
The JR East urban network is a dense system of commuter and suburban railway lines in the Greater Tokyo and surrounding metropolitan areas operated by East Japan Railway Company (JR East).
-
D.
Urban Network (JR West)
Urban Network (JR West) is the branding for JR West’s dense commuter and regional rail system serving the greater Kansai metropolitan area and surrounding regions in western Japan.
-
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 (49)
| Predicate | Object |
|---|---|
| instanceOf |
conventional railway line network
ⓘ
railway network ⓘ |
| connectsWith |
JR Central conventional lines
self-linksurface differs
ⓘ
surface form:
JR Central Shinkansen network
JR East conventional lines ⓘ JR West railway lines ⓘ
surface form:
JR West conventional lines
private railways in Chūbu region ⓘ |
| country | Japan ⓘ |
| electrification | overhead catenary ⓘ |
| electrificationVoltage |
1500 V DC (majority of electrified sections)
ⓘ
20 kV AC 60 Hz (some sections) ⓘ |
| excludes | Shinkansen lines ⓘ |
| fareSystem | JR fare system ⓘ |
| gaugeType | narrow gauge railways in Japan ⓘ |
| hasOwner | Central Japan Railway Company ⓘ |
| hasServiceType |
freight trains
ⓘ
limited express trains ⓘ local trains ⓘ rapid trains ⓘ |
| headquartersLocationOfOperator | Nagoya ⓘ |
| historicalOrigin | former Japanese National Railways conventional lines in the region ⓘ |
| includesLine |
Chūō Main Line (JR Central section)
NERFINISHED
ⓘ
Gotemba Line NERFINISHED ⓘ Iida Line NERFINISHED ⓘ Kansai Airport Line (JR Central does not operate; remove) ⓘ Kansai Main Line ⓘ
surface form:
Kansai Main Line (JR Central section)
Kisei Main Line (JR Central section) NERFINISHED ⓘ Minobu Line NERFINISHED ⓘ Sangū Line NERFINISHED ⓘ Takayama Main Line (JR Central section) ⓘ Tōkaidō Main Line (JR Central section) NERFINISHED ⓘ |
| locatedIn | Chūbu region ⓘ |
| operator |
Central Japan Railway Company
ⓘ
Central Japan Railway Company ⓘ
surface form:
JR Central
|
| partOf |
JR Group conventional lines
ⓘ
national railway network of Japan ⓘ
surface form:
Japanese national railway network
|
| primaryUse | passenger transport ⓘ |
| railwaySystemType | conventional rail ⓘ |
| regulatoryAuthority |
Ministry of Land, Infrastructure, Transport and Tourism
ⓘ
surface form:
Ministry of Land, Infrastructure, Transport and Tourism of Japan
|
| safetySystem | ATS (Automatic Train Stop) on most lines ⓘ |
| secondaryUse | freight transport ⓘ |
| servesRegion |
Kansai region (eastern part)
ⓘ
Shin’etsu region (parts) ⓘ Tōkai region ⓘ |
| signallingSystem | automatic block signalling (most main lines) ⓘ |
| startOfOperationByCurrentOperator |
1 April 1987
ⓘ
1987 ⓘ |
| ticketingSystem |
TOICA
ⓘ
surface form:
TOICA IC card (major part of network)
|
| usesTrackGauge |
1067 mm
ⓘ
narrow 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: JR Central conventional lines Description of subject: JR Central conventional lines are the network of standard (non–Shinkansen) passenger and freight railway lines operated by Central Japan Railway Company across the Chūbu region of Japan.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
JR Central lines
JR Central conventional lines
→
connectsWith
→
JR Central conventional lines
self-linksurface differs
ⓘ
this entity surface form:
JR Central Shinkansen network
this entity surface form:
JR Central network
subject surface form:
Kamo–Kameyama section
this entity surface form:
JR conventional lines network
subject surface form:
Kameyama–Nagoya section
this entity surface form:
JR Central conventional network