Tokyo–Nagoya maglev line
E1002373
The Tokyo–Nagoya maglev line is a planned high-speed magnetic levitation railway in Japan that will form the first segment of the Chūō Shinkansen, dramatically cutting travel time between Tokyo and Nagoya.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tokyo–Nagoya maglev line canonical | 1 |
| Tokyo–Osaka maglev line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12801626 — 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–Nagoya maglev line Context triple: [JR Tōkai, maglevLineUnderDevelopment, Tokyo–Nagoya maglev line]
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A.
Minatomirai Line
The Minatomirai Line is a private railway line in Yokohama, Japan, connecting central Yokohama with the Minato Mirai 21 waterfront district and offering through services with multiple Tokyo subway and suburban lines.
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B.
Chiba Urban Monorail
Chiba Urban Monorail is a suspended monorail system in Chiba, Japan, known as one of the world’s longest urban monorail networks and a key component of the city’s public transit.
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C.
Jōetsu Shinkansen
The Jōetsu Shinkansen is a high-speed rail line in Japan that connects Tokyo with the Niigata region, providing rapid passenger service through central Honshu.
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D.
Tokaido Shinkansen
The Tokaido Shinkansen is Japan’s pioneering high-speed rail line connecting Tokyo with Osaka and other major cities, renowned for its speed, punctuality, and heavy passenger usage.
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E.
Sanyo Shinkansen
Sanyo Shinkansen is a high-speed railway line in Japan that connects Osaka with western Honshu cities such as Hiroshima and Fukuoka as part of the Shinkansen network.
- 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–Nagoya maglev line Target entity description: The Tokyo–Nagoya maglev line is a planned high-speed magnetic levitation railway in Japan that will form the first segment of the Chūō Shinkansen, dramatically cutting travel time between Tokyo and Nagoya.
-
A.
Minatomirai Line
The Minatomirai Line is a private railway line in Yokohama, Japan, connecting central Yokohama with the Minato Mirai 21 waterfront district and offering through services with multiple Tokyo subway and suburban lines.
-
B.
Chiba Urban Monorail
Chiba Urban Monorail is a suspended monorail system in Chiba, Japan, known as one of the world’s longest urban monorail networks and a key component of the city’s public transit.
-
C.
Jōetsu Shinkansen
The Jōetsu Shinkansen is a high-speed rail line in Japan that connects Tokyo with the Niigata region, providing rapid passenger service through central Honshu.
-
D.
Tokaido Shinkansen
The Tokaido Shinkansen is Japan’s pioneering high-speed rail line connecting Tokyo with Osaka and other major cities, renowned for its speed, punctuality, and heavy passenger usage.
-
E.
Sanyo Shinkansen
Sanyo Shinkansen is a high-speed railway line in Japan that connects Osaka with western Honshu cities such as Hiroshima and Fukuoka as part of the Shinkansen network.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
high-speed railway line
ⓘ
magnetic levitation railway ⓘ planned infrastructure project ⓘ |
| country | Japan ⓘ |
| electrification | electric power supply for superconducting magnets ⓘ |
| endPoint | Nagoya NERFINISHED ⓘ |
| formsSegmentOf | Tokyo–Osaka maglev route NERFINISHED ⓘ |
| gauge | guideway without conventional track gauge ⓘ |
| infrastructureType | mostly tunnel alignment ⓘ |
| locatedIn | Honshu ⓘ |
| notableFeature |
designed for very high operating speeds
ⓘ
first commercial segment of Japan’s superconducting maglev network ⓘ |
| operator |
Central Japan Railway Company
NERFINISHED
ⓘ
JR Central NERFINISHED ⓘ |
| partOf | Chūō Shinkansen NERFINISHED ⓘ |
| plannedRole | first segment of the Chūō Shinkansen ⓘ |
| plannedService | intercity passenger transport ⓘ |
| projectedImpact |
dramatically reduced travel time between Tokyo and Nagoya
ⓘ
relief of congestion on existing Tōkaidō Shinkansen ⓘ |
| propulsion | linear motor ⓘ |
| purpose |
increase passenger transport capacity on Tōkaidō corridor
ⓘ
reduce travel time between Tokyo and Nagoya ⓘ |
| railwaySystem | Chūō Shinkansen system NERFINISHED ⓘ |
| railwayType | high-speed rail ⓘ |
| regionServed |
Chūbu region
NERFINISHED
ⓘ
Greater Tokyo Area NERFINISHED ⓘ |
| startPoint | Tokyo NERFINISHED ⓘ |
| status |
partially delayed
ⓘ
under construction ⓘ |
| usesTechnology |
maglev
ⓘ
superconducting maglev ⓘ |
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–Nagoya maglev line Description of subject: The Tokyo–Nagoya maglev line is a planned high-speed magnetic levitation railway in Japan that will form the first segment of the Chūō Shinkansen, dramatically cutting travel time between Tokyo and Nagoya.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tokyo–Osaka maglev line