Tobu Nikko Line
E177154
The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tobu Nikko Line canonical | 8 |
| Tōbu Nikkō Line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1183165 — 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 Nikko Line Context triple: [Tokyo Metro Hanzomon Line, throughServiceWith, Tobu Nikko Line]
-
A.
Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
-
B.
Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
-
C.
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.
-
D.
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.
-
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: Tobu Nikko Line Target entity description: The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
-
A.
Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
-
B.
Tobu Isesaki Line
The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
-
C.
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.
-
D.
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.
-
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 (43)
| Predicate | Object |
|---|---|
| instanceOf |
private railway line
ⓘ
railway line ⓘ |
| connectsFrom |
Tokyo area
ⓘ
linked to:
Tokyo metropolitan area
|
| connectsTo | Nikko ⓘ |
| connectsWith |
JR East network (via through services)
ⓘ
linked to:
JR East urban network
Tobu Kinugawa Line NERFINISHED ⓘ Tobu Skytree Line ⓘ |
| country | Japan ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| endingStation | Tobu Nikko Station ⓘ |
| gauge | 1,067 mm ⓘ |
| hasRollingStockOperator | Tobu Railway ⓘ |
| hasServiceType |
express
ⓘ
limited express ⓘ local ⓘ |
| hasThroughServicesWith |
JR East Tohoku Main Line
ⓘ
linked to:
Tōhoku Main Line
Tokyo Metro Hanzomon Line NERFINISHED ⓘ Tokyo Metro Hibiya Line (historically / partially) ⓘ
linked to:
Tokyo Metro Hibiya Line
Tokyu Den-en-toshi Line NERFINISHED ⓘ |
| isInTransportCategory |
Tobu Railway lines
ⓘ
linked to:
Tobu Railway
rail transport in Japan ⓘ railway lines in Tochigi Prefecture ⓘ |
| locatedIn |
Kanto region
ⓘ
linked to:
Kantō region
Tochigi Prefecture NERFINISHED ⓘ |
| operator | Tobu Railway ⓘ |
| operatorType | private railway operator ⓘ |
| owner | Tobu Railway ⓘ |
| partOfNetwork |
Tobu Railway network
ⓘ
linked to:
Tobu Railway
|
| primaryUse | passenger transport ⓘ |
| railwayCompany | Tobu Railway ⓘ |
| railwaySignalling | automatic block system ⓘ |
| railwaySystem | Tobu Railway ⓘ |
| regionServed |
Saitama Prefecture
ⓘ
Tochigi Prefecture NERFINISHED ⓘ Tokyo Metropolis ⓘ
linked to:
Tokyo Prefecture
|
| serves |
Nikko region
ⓘ
linked to:
Nikko
|
| servesTouristDestination |
Nikko
ⓘ
Nikko National Park ⓘ
linked to:
Nikkō National Park
Nikko Toshogu Shrine ⓘ
linked to:
Nikkō Tōshō-gū
|
| startingStation |
Tobu Asakusa Station
ⓘ
linked to:
Asakusa Station
|
| terminus |
Tobu Asakusa Station
ⓘ
linked to:
Asakusa Station
Tobu Nikko Station ⓘ |
| trackGauge | Cape gauge ⓘ |
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 Nikko Line Description of subject: The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.