Okayama–Hiroshima section
E1020700
The Okayama–Hiroshima section is a major high-speed rail segment of Japan’s Sanyō Shinkansen line, linking the Chūgoku region’s key cities and facilitating rapid intercity travel in western Honshu.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hiroshima metropolitan area (via onward San’yō Shinkansen) | 1 |
| Okayama–Hiroshima section canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13037678 — 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: Okayama–Hiroshima section Context triple: [Sanyō Shinkansen, openedSection, Okayama–Hiroshima section]
-
A.
Okayama–Hakata section
The Okayama–Hakata section is the western stretch of Japan’s Sanyō Shinkansen high-speed rail line, linking Okayama with Hakata (Fukuoka) across the Chūgoku region.
-
B.
Shin-Osaka–Okayama section
The Shin-Osaka–Okayama section is the western portion of Japan’s high-speed Sanyō Shinkansen line that connects Osaka with Okayama and serves as a key corridor toward Hiroshima and Kyushu.
-
C.
Tokyo–Okayama
Tokyo–Okayama is a major Shinkansen corridor in Japan connecting the Tokyo metropolitan area with the Chūgoku region via high-speed rail.
-
D.
Nagoya–Osaka section
The Nagoya–Osaka section is the planned western extension of Japan’s Chuo Shinkansen maglev line, intended to connect Nagoya with Osaka as part of a high-speed intercity corridor.
-
E.
Akita–Aomori section
The Akita–Aomori section is the northern stretch of Japan’s Ōu Main Line that connects Akita Prefecture with Aomori Prefecture in the Tōhoku region.
- 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: Okayama–Hiroshima section Target entity description: The Okayama–Hiroshima section is a major high-speed rail segment of Japan’s Sanyō Shinkansen line, linking the Chūgoku region’s key cities and facilitating rapid intercity travel in western Honshu.
-
A.
Okayama–Hakata section
The Okayama–Hakata section is the western stretch of Japan’s Sanyō Shinkansen high-speed rail line, linking Okayama with Hakata (Fukuoka) across the Chūgoku region.
-
B.
Shin-Osaka–Okayama section
The Shin-Osaka–Okayama section is the western portion of Japan’s high-speed Sanyō Shinkansen line that connects Osaka with Okayama and serves as a key corridor toward Hiroshima and Kyushu.
-
C.
Tokyo–Okayama
Tokyo–Okayama is a major Shinkansen corridor in Japan connecting the Tokyo metropolitan area with the Chūgoku region via high-speed rail.
-
D.
Nagoya–Osaka section
The Nagoya–Osaka section is the planned western extension of Japan’s Chuo Shinkansen maglev line, intended to connect Nagoya with Osaka as part of a high-speed intercity corridor.
-
E.
Akita–Aomori section
The Akita–Aomori section is the northern stretch of Japan’s Ōu Main Line that connects Akita Prefecture with Aomori Prefecture in the Tōhoku region.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
high-speed rail line section
ⓘ
railway line section ⓘ |
| connectsCity |
Fukuyama
ⓘ
Hiroshima ⓘ Okayama NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | 25 kV AC overhead catenary ⓘ |
| endStation | Hiroshima Station NERFINISHED ⓘ |
| gaugeValue | 1435 mm ⓘ |
| isSegmentOf |
Shinkansen network
ⓘ
linked to:
Shinkansen high-speed rail network
|
| lineUsedBy |
Hikari service
ⓘ
linked to:
Hikari
Kodama service ⓘ
linked to:
Kodama services
Nozomi service ⓘ
linked to:
Nozomi services
|
| locatedIn |
Honshu
ⓘ
Japan ⓘ |
| locatedInRegion | Chūgoku region ⓘ |
| locatedOnIsland | Honshu ⓘ |
| maximumSpeedClass | high-speed ⓘ |
| notableFor | rapid intercity travel in western Honshu ⓘ |
| operator |
JR West
ⓘ
West Japan Railway Company ⓘ |
| partOf |
Sanyō Shinkansen
ⓘ
linked to:
Sanyo Shinkansen
|
| partOfCorridor |
Tōkaidō–Sanyō Shinkansen corridor
ⓘ
linked to:
Sanyō Shinkansen line
|
| purpose | intercity passenger transport ⓘ |
| railwayCharacter | grade-separated ⓘ |
| railwayGauge | standard gauge ⓘ |
| railwaySystem | Shinkansen ⓘ |
| railwayType | high-speed rail ⓘ |
| regionServed | western Honshu ⓘ |
| startStation | Okayama Station NERFINISHED ⓘ |
| trackConfiguration | double track ⓘ |
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: Okayama–Hiroshima section Description of subject: The Okayama–Hiroshima section is a major high-speed rail segment of Japan’s Sanyō Shinkansen line, linking the Chūgoku region’s key cities and facilitating rapid intercity travel in western Honshu.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Sanyō Shinkansen line
linked to: Okayama–Hiroshima section