Muroran Main Line
E524501
The Muroran Main Line is a major railway line in Hokkaido, Japan, connecting key cities and industrial areas along the region’s southern coast.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Muroran Main Line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2984578 — 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: Muroran Main Line Context triple: [Muroran, railwayServedBy, Muroran Main Line]
-
A.
Hokkaido Main Line
The Hokkaido Main Line is a major railway corridor in Hokkaido, Japan, connecting key cities and serving as one of the region’s primary transportation routes.
-
B.
Sōbu Line
The Sōbu Line is a major Japan Railways (JR) commuter and intercity railway line in the Tokyo–Chiba area, connecting central Tokyo with eastern suburbs and cities in Chiba Prefecture.
-
C.
Kosei Line
The Kosei Line is a railway line in Japan operated by JR West that runs along the western shore of Lake Biwa, connecting Kyoto with the Shiga and Fukui prefecture areas.
-
D.
Yumesaki Line
The Yumesaki Line is a railway line in Osaka, Japan, primarily serving access to the Osaka Bay area including major attractions such as Universal Studios Japan.
-
E.
Sanyo Main Line
The Sanyo Main Line is a major railway corridor in western Japan connecting the Kansai and Chugoku regions along the Seto Inland Sea coast.
- 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: Muroran Main Line Target entity description: The Muroran Main Line is a major railway line in Hokkaido, Japan, connecting key cities and industrial areas along the region’s southern coast.
-
A.
Hokkaido Main Line
The Hokkaido Main Line is a major railway corridor in Hokkaido, Japan, connecting key cities and serving as one of the region’s primary transportation routes.
-
B.
Sōbu Line
The Sōbu Line is a major Japan Railways (JR) commuter and intercity railway line in the Tokyo–Chiba area, connecting central Tokyo with eastern suburbs and cities in Chiba Prefecture.
-
C.
Kosei Line
The Kosei Line is a railway line in Japan operated by JR West that runs along the western shore of Lake Biwa, connecting Kyoto with the Shiga and Fukui prefecture areas.
-
D.
Yumesaki Line
The Yumesaki Line is a railway line in Osaka, Japan, primarily serving access to the Osaka Bay area including major attractions such as Universal Studios Japan.
-
E.
Sanyo Main Line
The Sanyo Main Line is a major railway corridor in western Japan connecting the Kansai and Chugoku regions along the Seto Inland Sea coast.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
heavy rail
ⓘ
railway line ⓘ |
| connects |
Higashi-Muroran Station
NERFINISHED
ⓘ
Iwamizawa Station NERFINISHED ⓘ Muroran Station NERFINISHED ⓘ Noboribetsu Station NERFINISHED ⓘ Oshamambe Station NERFINISHED ⓘ Tomakomai Station NERFINISHED ⓘ |
| connectsToLine |
Chitose Line
NERFINISHED
ⓘ
Hakodate Main Line NERFINISHED ⓘ Nemuro Main Line (via Iwamizawa) NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | 20 kV AC 50 Hz overhead catenary (partial) ⓘ |
| followsCoastOf | Pacific Ocean NERFINISHED ⓘ |
| geographicOrientation | east–west ⓘ |
| hasEndpointCity |
Iwamizawa
NERFINISHED
ⓘ
Muroran NERFINISHED ⓘ Oshamambe NERFINISHED ⓘ |
| hasService |
limited express trains
ⓘ
local trains ⓘ rapid trains ⓘ |
| locale | southern Hokkaido ⓘ |
| locatedIn | Hokkaido NERFINISHED ⓘ |
| locatedOnIsland | Hokkaido NERFINISHED ⓘ |
| nativeName | 室蘭本線 ⓘ |
| nativeNameLanguage | ja ⓘ |
| numberOfTracks |
double track (partially)
ⓘ
single track (partially) ⓘ |
| openingDate | late 19th century ⓘ |
| operator | Hokkaido Railway Company NERFINISHED ⓘ |
| owner | Hokkaido Railway Company NERFINISHED ⓘ |
| partOfNetwork | JR Hokkaido network NERFINISHED ⓘ |
| primaryFunction |
linking key cities along southern Hokkaido coast
ⓘ
supporting heavy industry and port logistics ⓘ |
| railwayCompanyType | JR Group company line ⓘ |
| railwaySignallingSystem | automatic block system (on main sections) ⓘ |
| region |
Iburi Subprefecture
NERFINISHED
ⓘ
Oshima Subprefecture NERFINISHED ⓘ |
| serves |
Noboribetsu onsen area
NERFINISHED
ⓘ
Tomakomai industrial zone NERFINISHED ⓘ industrial areas in southern Hokkaido ⓘ port of Muroran ⓘ |
| status | in operation ⓘ |
| trackGauge | 1,067 mm ⓘ |
| usedFor |
freight transport
ⓘ
passenger transport ⓘ |
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: Muroran Main Line Description of subject: The Muroran Main Line is a major railway line in Hokkaido, Japan, connecting key cities and industrial areas along the region’s southern coast.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.