JR Saikyo Line (at Ikebukuro Station)
E623123
The JR Saikyo Line at Ikebukuro Station is a major JR East commuter rail line in Tokyo that provides rapid north–south access through the city and connects with multiple private and subway lines.
All labels observed (2)
| Label | Occurrences |
|---|---|
| JR Saikyo Line (at Ikebukuro Station) canonical | 1 |
| Saikyō Line (through service via Shōnan–Shinjuku Line patterns may not stop) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6795012 — 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 Saikyo Line (at Ikebukuro Station) Context triple: [Tobu Tojo Line, connectsWith, JR Saikyo Line (at Ikebukuro Station)]
-
A.
Seibu Ikebukuro Line
The Seibu Ikebukuro Line is a major private railway line in the Tokyo area operated by Seibu Railway, connecting Ikebukuro in central Tokyo with suburban destinations in Saitama Prefecture.
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B.
Seibu Ikebukuro
Seibu Ikebukuro is a major Japanese department store located in Tokyo’s Ikebukuro district, known for its extensive fashion, food, and lifestyle offerings.
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C.
JR Lines at Kanda
JR Lines at Kanda refers to the Japan Railways train services that stop at Kanda Station in Tokyo, a key commuter hub connecting multiple JR lines with the Tokyo Metro network.
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D.
Seibu Yurakucho Line
The Seibu Yurakucho Line is a commuter railway line in Tokyo operated by Seibu Railway, linking the Seibu Ikebukuro Line with central Tokyo subway networks.
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E.
Seibu Shinjuku Line
The Seibu Shinjuku Line is a major private railway line in the Tokyo area operated by Seibu Railway, connecting Seibu-Shinjuku Station in central Tokyo with suburban cities in western Tokyo and Saitama Prefecture.
- 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 Saikyo Line (at Ikebukuro Station) Target entity description: The JR Saikyo Line at Ikebukuro Station is a major JR East commuter rail line in Tokyo that provides rapid north–south access through the city and connects with multiple private and subway lines.
-
A.
Seibu Ikebukuro Line
The Seibu Ikebukuro Line is a major private railway line in the Tokyo area operated by Seibu Railway, connecting Ikebukuro in central Tokyo with suburban destinations in Saitama Prefecture.
-
B.
Seibu Ikebukuro
Seibu Ikebukuro is a major Japanese department store located in Tokyo’s Ikebukuro district, known for its extensive fashion, food, and lifestyle offerings.
-
C.
JR Lines at Kanda
JR Lines at Kanda refers to the Japan Railways train services that stop at Kanda Station in Tokyo, a key commuter hub connecting multiple JR lines with the Tokyo Metro network.
-
D.
Seibu Yurakucho Line
The Seibu Yurakucho Line is a commuter railway line in Tokyo operated by Seibu Railway, linking the Seibu Ikebukuro Line with central Tokyo subway networks.
-
E.
Seibu Shinjuku Line
The Seibu Shinjuku Line is a major private railway line in the Tokyo area operated by Seibu Railway, connecting Seibu-Shinjuku Station in central Tokyo with suburban cities in western Tokyo and Saitama Prefecture.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail stop
ⓘ
railway service stop ⓘ |
| adjacentJRStationNorth | Itabashi Station NERFINISHED ⓘ |
| adjacentJRStationSouth | Shinjuku Station NERFINISHED ⓘ |
| category | JR East Ikebukuro Station services ⓘ |
| connectsDirection | north–south ⓘ |
| connectsToLineAtStation |
Seibu Ikebukuro Line at Ikebukuro Station
ⓘ
Shonan–Shinjuku Line at Ikebukuro Station NERFINISHED ⓘ Tobu Tojo Line at Ikebukuro Station ⓘ Tokyo Metro Fukutoshin Line at Ikebukuro Station ⓘ Tokyo Metro Marunouchi Line at Ikebukuro Station NERFINISHED ⓘ Tokyo Metro Yurakucho Line at Ikebukuro Station NERFINISHED ⓘ Yamanote Line at Ikebukuro Station NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | overhead catenary ⓘ |
| fareSystem | JR East fare system ⓘ |
| lineColor | dark green ⓘ |
| locatedInCity | Tokyo NERFINISHED ⓘ |
| locatedInPrefecture | Tokyo Metropolis NERFINISHED ⓘ |
| locatedInStation | Ikebukuro Station NERFINISHED ⓘ |
| locatedInWard | Toshima NERFINISHED ⓘ |
| operator |
East Japan Railway Company
NERFINISHED
ⓘ
JR East NERFINISHED ⓘ |
| partOf | Saikyo Line NERFINISHED ⓘ |
| peakUsage | weekday rush hours ⓘ |
| platformType | island platform ⓘ |
| primaryUsers | commuters ⓘ |
| railNetwork | Greater Tokyo rail network NERFINISHED ⓘ |
| railwayCompany | JR East NERFINISHED ⓘ |
| role | major commuter route through central Tokyo ⓘ |
| safetyFeatures | platform screen doors on some platforms ⓘ |
| servesArea |
Ikebukuro commercial district
NERFINISHED
ⓘ
northwestern Tokyo suburbs ⓘ |
| serviceType |
commuter rail
ⓘ
rapid service ⓘ |
| smartCard |
PASMO
NERFINISHED
ⓘ
Suica NERFINISHED ⓘ |
| throughService |
Kawagoe Line
NERFINISHED
ⓘ
Rinkai Line NERFINISHED ⓘ |
| ticketing | IC cards accepted ⓘ |
| trackGauge |
1067 mm
ⓘ
Cape gauge ⓘ |
| usage | heavy commuter traffic ⓘ |
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 Saikyo Line (at Ikebukuro Station) Description of subject: The JR Saikyo Line at Ikebukuro Station is a major JR East commuter rail line in Tokyo that provides rapid north–south access through the city and connects with multiple private and subway lines.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Saikyō Line (through service via Shōnan–Shinjuku Line patterns may not stop)