Akita Shinkansen
E194126
The Akita Shinkansen is a Japanese high-speed "mini-shinkansen" rail line connecting Akita Prefecture with the Tōhoku Shinkansen network, providing fast intercity service to and from Tokyo.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Akita Shinkansen canonical | 12 |
| Akita Shinkansen mini-shinkansen route | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1592355 — 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: Akita Shinkansen Context triple: [Tokyo Station, serves, Akita Shinkansen]
-
A.
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.
-
B.
Yamagata Shinkansen
The Yamagata Shinkansen is a Japanese high-speed "mini-shinkansen" rail line connecting Tokyo with Yamagata Prefecture by upgrading conventional tracks for Shinkansen through-service.
-
C.
Hokuriku Shinkansen
The Hokuriku Shinkansen is a high-speed rail line in Japan connecting Tokyo with cities along the Sea of Japan coast, including Nagano, Toyama, and Kanazawa.
-
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.
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.
- 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: Akita Shinkansen Target entity description: The Akita Shinkansen is a Japanese high-speed "mini-shinkansen" rail line connecting Akita Prefecture with the Tōhoku Shinkansen network, providing fast intercity service to and from Tokyo.
-
A.
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.
-
B.
Yamagata Shinkansen
The Yamagata Shinkansen is a Japanese high-speed "mini-shinkansen" rail line connecting Tokyo with Yamagata Prefecture by upgrading conventional tracks for Shinkansen through-service.
-
C.
Hokuriku Shinkansen
The Hokuriku Shinkansen is a high-speed rail line in Japan connecting Tokyo with cities along the Sea of Japan coast, including Nagano, Toyama, and Kanazawa.
-
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.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
high-speed rail line
ⓘ
mini-shinkansen line ⓘ |
| belongsTo |
Tōhoku Shinkansen
ⓘ
surface form:
JR East Shinkansen network
|
| connectedNetwork | Shinkansen network ⓘ |
| connectsWith | Tōhoku Shinkansen ⓘ |
| country | Japan ⓘ |
| depot | Akita Shinkansen Depot ⓘ |
| electrification | AC 20 kV 50 Hz overhead catenary ⓘ |
| endStation | Akita Station NERFINISHED ⓘ |
| formerRollingStock | E3 series Shinkansen ⓘ |
| freightService | no regular freight service ⓘ |
| fullyE6SeriesSince | 2014 ⓘ |
| gauge | 1,435 mm standard gauge ⓘ |
| intercityServiceTo | Tokyo ⓘ |
| introducedE6Series | 2013 ⓘ |
| introducedMiniShinkansenConcept | no ⓘ |
| lineLength | approximately 127.3 km ⓘ |
| lineType | mixed-traffic standard-gauge on conventional alignment ⓘ |
| maximumSpeed |
130 km/h on conventional sections
ⓘ
up to 275 km/h on Tōhoku Shinkansen sections ⓘ |
| miniShinkansenPrecededBy | Yamagata Shinkansen ⓘ |
| notableFeature |
direct through services to Tokyo via Tōhoku Shinkansen
ⓘ
standard-gauge trains running on upgraded conventional lines ⓘ |
| numberOfTracks | mostly single track ⓘ |
| openingDate | 1997-03-22 ⓘ |
| operator |
East Japan Railway Company
ⓘ
East Japan Railway Company ⓘ
surface form:
JR East
|
| primaryMarket | intercity passenger transport ⓘ |
| purpose | to provide fast intercity service between Akita and Tokyo ⓘ |
| regionServed |
Akita Prefecture
NERFINISHED
ⓘ
Iwate Prefecture NERFINISHED ⓘ |
| rollingStockFormation | 7-car E6 series sets ⓘ |
| routeIncludes |
Ōu Main Line
ⓘ
surface form:
Ōu Main Line (converted section)
|
| safetySystem |
ATC (on Shinkansen sections)
ⓘ
ATS (on conventional sections) ⓘ |
| serviceBrand |
Yamabiko
ⓘ
surface form:
Komachi
|
| servicePattern | all trains are named Komachi ⓘ |
| serviceType |
high-speed rail
ⓘ
limited express ⓘ |
| sharesTrackWith | conventional trains on Ōu Main Line ⓘ |
| startStation | Morioka Station NERFINISHED ⓘ |
| terminusCity | Akita ⓘ |
| ticketingSystem | Shinkansen reserved-seat system ⓘ |
| trackOwner |
East Japan Railway Company
ⓘ
surface form:
JR East
|
| trackType | converted narrow-gauge to standard gauge ⓘ |
| usesRollingStock | E6 series Shinkansen ⓘ |
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: Akita Shinkansen Description of subject: The Akita Shinkansen is a Japanese high-speed "mini-shinkansen" rail line connecting Akita Prefecture with the Tōhoku Shinkansen network, providing fast intercity service to and from Tokyo.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Morioka
this entity surface form:
Akita Shinkansen mini-shinkansen route