Namboku Line
E403125
The Namboku Line is a Tokyo Metro subway line running north–south through central Tokyo, connecting residential districts with major business and transit hubs.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Namboku Line canonical | 3 |
| Namboku Line between Hon-komagome Station and Nishigahara Station | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1860675 — 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: Namboku Line Context triple: [Tokyo Metro, operatesLine, Namboku Line]
-
A.
Nankai Koya Line
The Nankai Koya Line is a major private railway line in the Osaka region of Japan operated by Nankai Electric Railway, connecting central Osaka with the Mount Koya area.
-
B.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
C.
Sennichimae Line
The Sennichimae Line is a rapid transit line in Osaka, Japan, forming part of the city’s urban subway network.
-
D.
Tanagawa Line
The Tanagawa Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passengers near the coastal area.
-
E.
Marunouchi Line
The Marunouchi Line is one of Tokyo’s main subway lines, forming a central loop and radial route that connects key business, shopping, and transit hubs across the city.
- 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: Namboku Line Target entity description: The Namboku Line is a Tokyo Metro subway line running north–south through central Tokyo, connecting residential districts with major business and transit hubs.
-
A.
Nankai Koya Line
The Nankai Koya Line is a major private railway line in the Osaka region of Japan operated by Nankai Electric Railway, connecting central Osaka with the Mount Koya area.
-
B.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
C.
Sennichimae Line
The Sennichimae Line is a rapid transit line in Osaka, Japan, forming part of the city’s urban subway network.
-
D.
Tanagawa Line
The Tanagawa Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passengers near the coastal area.
-
E.
Marunouchi Line
The Marunouchi Line is one of Tokyo’s main subway lines, forming a central loop and radial route that connects key business, shopping, and transit hubs across the city.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Tokyo Metro line
ⓘ
subway line ⓘ |
| character | underground ⓘ |
| connectsTo |
JR Chuo-Sobu Line
NERFINISHED
ⓘ
JR Keihin-Tohoku Line NERFINISHED ⓘ JR Keiyo Line NERFINISHED ⓘ JR Saikyo Line NERFINISHED ⓘ Saitama Rapid Railway Line NERFINISHED ⓘ Toei Mita Line NERFINISHED ⓘ Toei Oedo Line NERFINISHED ⓘ Tokyo Metro Ginza Line NERFINISHED ⓘ Tokyo Metro Hibiya Line NERFINISHED ⓘ Tokyo Metro Marunouchi Line NERFINISHED ⓘ Tokyo Metro Yurakucho Line NERFINISHED ⓘ Tokyu Meguro Line NERFINISHED ⓘ Yamanote Line at Komagome ⓘ Yamanote Line at Meguro ⓘ Yamanote Line at Sugamo ⓘ |
| electrification | 1500 V DC overhead catenary ⓘ |
| fareSystem | integrated with Tokyo Metro fare system ⓘ |
| fullOpeningCompleted | 2000-09-26 ⓘ |
| hasPlatformScreenDoors | yes ⓘ |
| lineCode | N ⓘ |
| lineColor | emerald green ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| notableStation |
Ichigaya Station
NERFINISHED
ⓘ
Korakuen Station NERFINISHED ⓘ Nagatacho Station NERFINISHED ⓘ Tameike-sanno Station NERFINISHED ⓘ |
| numberOfStations | 19 ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 1991-11-29 ⓘ |
| operator | Tokyo Metro ⓘ |
| passesThroughWard |
Bunkyo
NERFINISHED
ⓘ
Chiyoda NERFINISHED ⓘ Itabashi NERFINISHED ⓘ Kita ⓘ Minato NERFINISHED ⓘ |
| platformType | island platforms (predominantly) ⓘ |
| rollingStock |
Saitama Rapid Railway 2000 series EMU
ⓘ
surface form:
Saitama Rapid Railway 2000 series
Tokyo Metro 9000 series ⓘ Tokyu 3000 series EMU ⓘ
surface form:
Tokyu 3000 series
Tokyu 5080 series EMU ⓘ
surface form:
Tokyu 5080 series
|
| servicePattern |
through services onto Saitama Rapid Railway Line
ⓘ
through services onto Tokyu Meguro Line ⓘ |
| signalingSystem | Automatic train control ⓘ |
| terminusStationNorth | Akabane-iwabuchi Station NERFINISHED ⓘ |
| terminusStationSouth | Meguro Station NERFINISHED ⓘ |
| ticketing | accepts IC cards Suica and PASMO ⓘ |
| trackGauge | 1067 mm ⓘ |
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: Namboku Line Description of subject: The Namboku Line is a Tokyo Metro subway line running north–south through central Tokyo, connecting residential districts with major business and transit hubs.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Namboku Line between Hon-komagome Station and Nishigahara Station