Tobu Skytree Line
E173391
The Tobu Skytree Line is a major private railway line in the Tokyo area operated by Tobu Railway, serving central Tokyo and extending northward toward Saitama and Tochigi, including access to the Tokyo Skytree.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Tobu Skytree Line canonical | 15 |
| Tobu Skytree Line (southern section branding) | 1 |
| Tobu Skytree Line at Oshiage | 1 |
| Tobu Skytree limited express | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1183163 — 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: Tobu Skytree Line Context triple: [Tokyo Metro Hanzomon Line, throughServiceWith, Tobu Skytree Line]
-
A.
JR Saikyo Line
The JR Saikyo Line is a major commuter rail line in the Tokyo metropolitan area operated by JR East, connecting central Tokyo with Saitama Prefecture and serving key hubs such as Shibuya and Shinjuku.
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B.
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.
-
C.
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.
-
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.
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.
- 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: Tobu Skytree Line Target entity description: The Tobu Skytree Line is a major private railway line in the Tokyo area operated by Tobu Railway, serving central Tokyo and extending northward toward Saitama and Tochigi, including access to the Tokyo Skytree.
-
A.
JR Saikyo Line
The JR Saikyo Line is a major commuter rail line in the Tokyo metropolitan area operated by JR East, connecting central Tokyo with Saitama Prefecture and serving key hubs such as Shibuya and Shinjuku.
-
B.
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.
-
C.
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.
-
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.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| brandingIntroducedFor | section between Asakusa and Tobu-Dobutsu-Koen ⓘ |
| connectsWith |
JR Joban Line (via Kita-Senju)
ⓘ
Tokyo Metro Ginza Line ⓘ
surface form:
Tokyo Metro Ginza Line (via Asakusa)
Tokyo Metro Hanzomon Line NERFINISHED ⓘ Tokyu Den-en-toshi Line NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | overhead catenary ⓘ |
| fareSystem | integrated with Tobu Railway fare system ⓘ |
| formerName | Tobu Isesaki Line (Tokyo urban section) NERFINISHED ⓘ |
| hasRollingStockOperator | Tobu Railway ⓘ |
| hasServiceType |
express train
ⓘ
limited express train ⓘ local train ⓘ through service to Tokyo Metro Hanzomon Line ⓘ through service to Tokyu Den-en-toshi Line ⓘ |
| hasStation |
Asakusa Station
ⓘ
Kasukabe Station NERFINISHED ⓘ Kita-Senju Station NERFINISHED ⓘ Oshiage Station NERFINISHED ⓘ Tobu-Dobutsu-Koen Station NERFINISHED ⓘ Tokyo Skytree Station ⓘ |
| locatedIn |
Saitama Prefecture
NERFINISHED
ⓘ
Tochigi Prefecture NERFINISHED ⓘ Tokyo ⓘ |
| namedAfter | Tokyo Skytree ⓘ |
| operator | Tobu Railway ⓘ |
| partOf | Tobu Isesaki Line NERFINISHED ⓘ |
| primaryFunction | commuter transport ⓘ |
| railwayCompanyType | private railway ⓘ |
| railwaySignalling | automatic block system ⓘ |
| regionServed |
Tokyo metropolitan area
ⓘ
surface form:
Greater Tokyo Area
|
| serves |
Adachi Ward
ⓘ
Asakusa ⓘ Kasukabe ⓘ Katsushika Ward ⓘ Kita-Senju ⓘ Kuki ⓘ Oshiage ⓘ Soka ⓘ Sumida ward ⓘ
surface form:
Sumida Ward
Tobu-Dobutsu-Koen ⓘ Tokyo Skytree ⓘ Yashio ⓘ |
| terminus |
Asakusa Station
ⓘ
Tobu-Dobutsu-Koen Station NERFINISHED ⓘ |
| trackGauge | 1,067 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: Tobu Skytree Line Description of subject: The Tobu Skytree Line is a major private railway line in the Tokyo area operated by Tobu Railway, serving central Tokyo and extending northward toward Saitama and Tochigi, including access to the Tokyo Skytree.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Oshiage Station (Toei Asakusa Line)
subject surface form:
Oshiage Station (Toei Asakusa Line)
this entity surface form:
Tobu Skytree Line at Oshiage
this entity surface form:
Tobu Skytree Line (southern section branding)
subject surface form:
Takenotsuka Station
this entity surface form:
Tobu Skytree limited express