Sotobō Line (urban section)
E568975
The Sotobō Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, serving densely populated suburbs with frequent urban train services.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sotobō Line (urban section) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5935541 — 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: Sotobō Line (urban section) Context triple: [JR East urban network, hasLine, Sotobō Line (urban section)]
-
A.
Uchibō Line (urban section)
The Uchibō Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, serving densely populated coastal districts with frequent local and rapid services.
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B.
Ryōmō Line (urban section)
The Ryōmō Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, serving as part of its metropolitan urban rail network.
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C.
Sanyō Main Line (urban section)
The Sanyō Main Line (urban section) is a heavily used commuter and intercity railway corridor in the Osaka–Kobe–Himeji metropolitan area of western Japan operated as part of JR West’s Urban Network.
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D.
Fukuchiyama Line urban section
The Fukuchiyama Line urban section is a heavily used commuter rail corridor in the Osaka–Kobe metropolitan area of Japan, operated by JR West as part of its JR Takarazuka Line.
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E.
Kawagoe Line (urban section)
The Kawagoe Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, linking suburban communities with major urban hubs as part of the company’s metropolitan network.
- 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: Sotobō Line (urban section) Target entity description: The Sotobō Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, serving densely populated suburbs with frequent urban train services.
-
A.
Uchibō Line (urban section)
The Uchibō Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, serving densely populated coastal districts with frequent local and rapid services.
-
B.
Ryōmō Line (urban section)
The Ryōmō Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, serving as part of its metropolitan urban rail network.
-
C.
Sanyō Main Line (urban section)
The Sanyō Main Line (urban section) is a heavily used commuter and intercity railway corridor in the Osaka–Kobe–Himeji metropolitan area of western Japan operated as part of JR West’s Urban Network.
-
D.
Fukuchiyama Line urban section
The Fukuchiyama Line urban section is a heavily used commuter rail corridor in the Osaka–Kobe metropolitan area of Japan, operated by JR West as part of its JR Takarazuka Line.
-
E.
Kawagoe Line (urban section)
The Kawagoe Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, linking suburban communities with major urban hubs as part of the company’s metropolitan network.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway corridor ⓘ |
| category |
Commuter rail in Japan
ⓘ
Lines of East Japan Railway Company NERFINISHED ⓘ Rail transport in Greater Tokyo ⓘ |
| character | urban ⓘ |
| connects | Tokyo suburbs ⓘ |
| country | Japan ⓘ |
| electrification | overhead line ⓘ |
| fareSystem | JR East fare system ⓘ |
| function | suburban commuter corridor ⓘ |
| integratedWith | Greater Tokyo rail network NERFINISHED ⓘ |
| locatedIn |
Greater Tokyo Area
NERFINISHED
ⓘ
Kantō region ⓘ |
| operator |
East Japan Railway Company
NERFINISHED
ⓘ
JR East NERFINISHED ⓘ |
| owner | JR East NERFINISHED ⓘ |
| partOf | Sotobō Line NERFINISHED ⓘ |
| primaryUse | commuter traffic ⓘ |
| railwaySystem | JR East network NERFINISHED ⓘ |
| rollingStockType | electric multiple unit ⓘ |
| serves | Tokyo metropolitan area NERFINISHED ⓘ |
| serviceFrequency | high frequency ⓘ |
| servicePattern | frequent urban train services ⓘ |
| serviceType | commuter rail ⓘ |
| trackGauge |
1,067 mm
ⓘ
Cape gauge ⓘ |
| trafficLevel | high passenger demand ⓘ |
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: Sotobō Line (urban section) Description of subject: The Sotobō Line (urban section) is a commuter rail corridor in the Greater Tokyo area operated by JR East, serving densely populated suburbs with frequent urban train services.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.