Tokyo Metro Chiyoda Line
E214411
The Tokyo Metro Chiyoda Line is a major Tokyo subway line running north–south through central districts and into suburban areas, connecting key hubs such as Omotesando, Otemachi, and Yoyogi-Uehara.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T1221745 — 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: Tokyo Metro Chiyoda Line Context triple: [Omotesando, servedBy, Tokyo Metro Chiyoda Line]
-
A.
Tokyo Metro Hanzomon Line
The Tokyo Metro Hanzomon Line is a major Tokyo subway line that runs east–west across the city center, linking Shibuya with key business and residential districts and offering through services onto private railway lines.
-
B.
Tokyo Metro Ginza Line
The Tokyo Metro Ginza Line is one of Tokyo’s oldest and most central subway lines, running east–west through major commercial and business districts including Shibuya and Ginza.
-
C.
Tokyo Metro Fukutoshin Line
The Tokyo Metro Fukutoshin Line is a major Tokyo subway line running north–south through central and suburban areas, connecting key hubs such as Shibuya with other important districts.
-
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.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
- 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: Tokyo Metro Chiyoda Line Target entity description: The Tokyo Metro Chiyoda Line is a major Tokyo subway line running north–south through central districts and into suburban areas, connecting key hubs such as Omotesando, Otemachi, and Yoyogi-Uehara.
-
A.
Tokyo Metro Hanzomon Line
The Tokyo Metro Hanzomon Line is a major Tokyo subway line that runs east–west across the city center, linking Shibuya with key business and residential districts and offering through services onto private railway lines.
-
B.
Tokyo Metro Ginza Line
The Tokyo Metro Ginza Line is one of Tokyo’s oldest and most central subway lines, running east–west through major commercial and business districts including Shibuya and Ginza.
-
C.
Tokyo Metro Fukutoshin Line
The Tokyo Metro Fukutoshin Line is a major Tokyo subway line running north–south through central and suburban areas, connecting key hubs such as Shibuya with other important districts.
-
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.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
Tokyo Metro line
ⓘ
rapid transit line ⓘ subway line ⓘ |
| character |
suburban
ⓘ
underground ⓘ |
| connects |
Ayase Station
NERFINISHED
ⓘ
Kita-Ayase Station NERFINISHED ⓘ Yoyogi-Uehara Station NERFINISHED ⓘ |
| connectsKeyHub |
Omotesando
ⓘ
Otemachi ⓘ Yoyogi-Uehara ⓘ |
| depot | Ayase Depot ⓘ |
| electrification | 1500 V DC overhead catenary ⓘ |
| fareSystem | integrated with Tokyo Metro fare system ⓘ |
| hasStation |
Ayase Station
NERFINISHED
ⓘ
Hibiya Station NERFINISHED ⓘ Kita-Ayase Station NERFINISHED ⓘ Kitasenju Station NERFINISHED ⓘ Kokkai-gijidomae Station NERFINISHED ⓘ Meiji-jingumae Station NERFINISHED ⓘ Nijubashimae Station NERFINISHED ⓘ Nogizaka Station ⓘ Omotesando Station NERFINISHED ⓘ Otemachi Station ⓘ Yoyogi-Uehara Station NERFINISHED ⓘ |
| lineCode | C ⓘ |
| lineColor | green ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 1969-12-20 ⓘ |
| operator | Tokyo Metro ⓘ |
| rollingStock |
JR East E233-2000 series
ⓘ
linked to:
E233 series EMU
Odakyu 4000 series ⓘ Tokyo Metro 16000 series ⓘ |
| serves |
Adachi
ⓘ
Arakawa ⓘ Bunkyō ⓘ Chiyoda ⓘ Machida ⓘ Minato ⓘ Setagaya ⓘ Shibuya ⓘ Shinjuku ⓘ central Tokyo ⓘ |
| terminus |
Ayase Station
NERFINISHED
ⓘ
Kita-Ayase Station NERFINISHED ⓘ Yoyogi-Uehara Station NERFINISHED ⓘ |
| throughServicesTo |
JR East Joban Line
ⓘ
Odakyu Odawara Line NERFINISHED ⓘ |
| trackGauge | 1067 mm ⓘ |
| usesPlatformScreenDoors | yes ⓘ |
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: Tokyo Metro Chiyoda Line Description of subject: The Tokyo Metro Chiyoda Line is a major Tokyo subway line running north–south through central districts and into suburban areas, connecting key hubs such as Omotesando, Otemachi, and Yoyogi-Uehara.
Referenced by (73)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Nagatachō, Tokyo, Japan
linked to: Tokyo Metro Chiyoda Line
linked to: Tokyo Metro Chiyoda Line
subject linked to:
Bunkyō, Tokyo, Japan
subject linked to:
Togo Shrine in Tokyo
subject linked to:
Tokyo Metro Chiyoda Line at Omotesando
linked to: Tokyo Metro Chiyoda Line
subject linked to:
Sendagi neighborhood
linked to: Tokyo Metro Chiyoda Line
subject linked to:
Tozai Line
linked to: Tokyo Metro Chiyoda Line
linked to: Tokyo Metro Chiyoda Line
subject linked to:
Omotesando district