Uchibō Line (urban section)
E566933
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Uchibō Line (urban section) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5935540 — 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: Uchibō Line (urban section) Context triple: [JR East urban network, hasLine, Uchibō Line (urban section)]
-
A.
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.
-
B.
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.
-
C.
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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D.
Hanzomon Line
The Hanzomon Line is a major Tokyo Metro subway line in Tokyo, Japan, running east–west through central districts and providing key commuter connections across the city.
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E.
Rinkai Line
The Rinkai Line is a Tokyo railway line that connects central Tokyo with the waterfront Odaiba area and other bayside districts.
- 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: Uchibō Line (urban section) Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Hanzomon Line
The Hanzomon Line is a major Tokyo Metro subway line in Tokyo, Japan, running east–west through central districts and providing key commuter connections across the city.
-
E.
Rinkai Line
The Rinkai Line is a Tokyo railway line that connects central Tokyo with the waterfront Odaiba area and other bayside districts.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway corridor ⓘ |
| category |
JR East commuter lines
ⓘ
urban rail in Japan ⓘ |
| country | Japan ⓘ |
| electrification | electric multiple unit operation ⓘ |
| fareSystem | JR East metropolitan area fare system ⓘ |
| gauge | narrow gauge ⓘ |
| integrationWith | other JR East urban lines ⓘ |
| locatedIn |
Greater Tokyo Area
ⓘ
linked to:
Tokyo metropolitan area
Kantō region ⓘ |
| networkRole |
suburban feeder line
ⓘ
urban commuter corridor ⓘ |
| operator |
East Japan Railway Company
ⓘ
JR East ⓘ
linked to:
East Japan Railway Company
|
| owner | East Japan Railway Company ⓘ |
| partOf | Uchibō Line ⓘ |
| primaryUse | commuter traffic ⓘ |
| railwaySystem | JR East urban network ⓘ |
| regionServed |
Chiba Prefecture coastal area
ⓘ
linked to:
Bōsō Peninsula
Tokyo metropolitan area ⓘ |
| rollingStockType | electric multiple units ⓘ |
| serves |
commuters
ⓘ
densely populated coastal districts ⓘ |
| serviceType |
local
ⓘ
rapid ⓘ |
| ticketing |
IC card compatible
ⓘ
PASMO accepted ⓘ Suica accepted ⓘ |
| trackUsage | frequent services ⓘ |
| trafficPattern | peak-hour commuter flows ⓘ |
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: Uchibō Line (urban section) Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.