Rumoi Main Line (partially, before closures)
E923926
The Rumoi Main Line was a regional railway route in Hokkaido, Japan, serving coastal communities along the Sea of Japan before sections were progressively closed.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rumoi Main Line (partially, before closures) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11406081 — 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: Rumoi Main Line (partially, before closures) Context triple: [JR Hokkaido, operatesLine, Rumoi Main Line (partially, before closures)]
-
A.
Hidaka Main Line (partially discontinued)
The Hidaka Main Line is a railway line in Hokkaido, Japan, historically serving coastal communities including Shinhidaka, parts of which have been closed due to storm damage and declining ridership.
-
B.
Sanin Main Line (partial)
The Sanin Main Line is a major railway route in western Japan that runs along the Sea of Japan coast, connecting numerous cities and rural areas across the San'in region.
-
C.
Muroran Main Line
The Muroran Main Line is a major railway line in Hokkaido, Japan, connecting key cities and industrial areas along the region’s southern coast.
-
D.
Ohmi Railway Main Line
The Ohmi Railway Main Line is a regional rail line in Shiga Prefecture, Japan, operated by Ohmi Railway and serving communities including the city of Omihachiman.
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E.
Shinano Railway Line
The Shinano Railway Line is a regional rail line in Nagano Prefecture, Japan, operated by Shinano Railway and serving as a key local corridor through the area.
- 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: Rumoi Main Line (partially, before closures) Target entity description: The Rumoi Main Line was a regional railway route in Hokkaido, Japan, serving coastal communities along the Sea of Japan before sections were progressively closed.
-
A.
Hidaka Main Line (partially discontinued)
The Hidaka Main Line is a railway line in Hokkaido, Japan, historically serving coastal communities including Shinhidaka, parts of which have been closed due to storm damage and declining ridership.
-
B.
Sanin Main Line (partial)
The Sanin Main Line is a major railway route in western Japan that runs along the Sea of Japan coast, connecting numerous cities and rural areas across the San'in region.
-
C.
Muroran Main Line
The Muroran Main Line is a major railway line in Hokkaido, Japan, connecting key cities and industrial areas along the region’s southern coast.
-
D.
Ohmi Railway Main Line
The Ohmi Railway Main Line is a regional rail line in Shiga Prefecture, Japan, operated by Ohmi Railway and serving communities including the city of Omihachiman.
-
E.
Shinano Railway Line
The Shinano Railway Line is a regional rail line in Nagano Prefecture, Japan, operated by Shinano Railway and serving as a key local corridor through the area.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
rail transport infrastructure
ⓘ
railway line ⓘ |
| closureReason |
declining ridership
ⓘ
financial difficulties of Hokkaido Railway Company ⓘ |
| connectsWith | Hakodate Main Line at Fukagawa Station ⓘ |
| country | Japan ⓘ |
| electrification | none ⓘ |
| extensionCompleted | to Mashike in 1921 ⓘ |
| formerOperator | Japanese National Railways NERFINISHED ⓘ |
| formerSection |
Fukagawa – Rumoi section
NERFINISHED
ⓘ
Rumoi – Mashike section ⓘ |
| gaugeType | narrow gauge ⓘ |
| historicalOperator |
Japanese Government Railways
NERFINISHED
ⓘ
Japanese National Railways NERFINISHED ⓘ |
| isPartOf | JR Hokkaido network NERFINISHED ⓘ |
| lineLengthBeforeClosures | approximately 66.8 km ⓘ |
| locale | between Fukagawa and Mashike ⓘ |
| locatedAlong | Sea of Japan coast NERFINISHED ⓘ |
| locatedIn |
Hokkaido
ⓘ
Rumoi Subprefecture NERFINISHED ⓘ Sorachi Subprefecture NERFINISHED ⓘ |
| locatedOnIsland | Hokkaido NERFINISHED ⓘ |
| notableFeature | ran parallel to the Sea of Japan coast for much of its length ⓘ |
| numberOfTracks | single track ⓘ |
| openedAs | line between Fukagawa and Rumoi ⓘ |
| openingDate | 1910 ⓘ |
| operator | Hokkaido Railway Company NERFINISHED ⓘ |
| owner | Hokkaido Railway Company NERFINISHED ⓘ |
| primaryUse |
local freight transport
ⓘ
regional passenger transport ⓘ |
| railwaySignalling | simplified automatic signalling ⓘ |
| railwayType |
local line
ⓘ
rural line ⓘ |
| regionServed | Sea of Japan coast of Hokkaido NERFINISHED ⓘ |
| sectionClosed | Rumoi – Mashike section NERFINISHED ⓘ |
| served | coastal communities along the Sea of Japan ⓘ |
| servedCity |
Fukagawa
NERFINISHED
ⓘ
Rumoi NERFINISHED ⓘ |
| servedTown | Mashike NERFINISHED ⓘ |
| servicePattern | all-stations (local) trains ⓘ |
| status |
partially closed
ⓘ
partially in operation ⓘ |
| successorOperator | Hokkaido Railway Company NERFINISHED ⓘ |
| terminus |
Fukagawa Station
NERFINISHED
ⓘ
Mashike Station NERFINISHED ⓘ Rumoi Station NERFINISHED ⓘ |
| trackGauge |
1067 mm
ⓘ
3 ft 6 in ⓘ |
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: Rumoi Main Line (partially, before closures) Description of subject: The Rumoi Main Line was a regional railway route in Hokkaido, Japan, serving coastal communities along the Sea of Japan before sections were progressively closed.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.