Chikuho Main Line
E849324
The Chikuho Main Line is a regional railway line in Fukuoka Prefecture, Japan, operated by JR Kyushu and known for connecting former coal-mining areas such as Iizuka with larger urban centers.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Chikuhō Main Line | 3 |
| Chikuho Main Line canonical | 2 |
| Chikuho Line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6433534 — 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: Chikuho Main Line Context triple: [Iizuka, Fukuoka, Japan, servedByRailwayLine, Chikuho Main Line]
-
A.
Kisei Main Line
The Kisei Main Line is a major railway line in Japan that runs along the Kii Peninsula, connecting cities in Osaka, Wakayama, and Mie Prefectures along the Pacific coast.
-
B.
Sōya Main Line
The Sōya Main Line is a railway line in Hokkaido, Japan, operated by JR Hokkaido that runs through the northernmost regions of the island, including the city of Wakkanai.
-
C.
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.
-
D.
Sanin Main Line
The Sanin Main Line is a major railway route in western Japan running along the Sea of Japan coast through the San'in region, connecting cities such as Kyoto, Tottori, and Shimonoseki.
-
E.
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.
- 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: Chikuho Main Line Target entity description: The Chikuho Main Line is a regional railway line in Fukuoka Prefecture, Japan, operated by JR Kyushu and known for connecting former coal-mining areas such as Iizuka with larger urban centers.
-
A.
Kisei Main Line
The Kisei Main Line is a major railway line in Japan that runs along the Kii Peninsula, connecting cities in Osaka, Wakayama, and Mie Prefectures along the Pacific coast.
-
B.
Sōya Main Line
The Sōya Main Line is a railway line in Hokkaido, Japan, operated by JR Hokkaido that runs through the northernmost regions of the island, including the city of Wakkanai.
-
C.
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.
-
D.
Sanin Main Line
The Sanin Main Line is a major railway route in western Japan running along the Sea of Japan coast through the San'in region, connecting cities such as Kyoto, Tottori, and Shimonoseki.
-
E.
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.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf | railway line ⓘ |
| belongsTo |
JR Kyushu Chikuho area routes
ⓘ
linked to:
Kyushu Railway lines
|
| connects |
Haruda Station
NERFINISHED
ⓘ
Iizuka Station NERFINISHED ⓘ Nogata Station NERFINISHED ⓘ Orio Station NERFINISHED ⓘ Wakamatsu Station NERFINISHED ⓘ |
| connectsFormerCoalMiningAreas | true ⓘ |
| connectsTo |
Kagoshima Main Line
ⓘ
Kashii Line ⓘ Sasaguri Line ⓘ |
| connectsUrbanCenters | true ⓘ |
| country | Japan ⓘ |
| electrification | 20 kV AC 60 Hz overhead catenary ⓘ |
| formerIndustryServed | coal mining ⓘ |
| formerName |
Chikuho Line
ⓘ
linked to:
Chikuho Main Line
|
| formerOperator | Japanese National Railways ⓘ |
| gaugeType | narrow gauge ⓘ |
| hasLocale | northern Kyushu ⓘ |
| hasOwnerAfterJNRPrivatization |
JR Kyushu
ⓘ
linked to:
Kyushu Railway Company
|
| hasRollingStockType |
JR Kyushu diesel multiple units
ⓘ
JR Kyushu electric multiple units ⓘ |
| historicalRole | serving coal-mining areas ⓘ |
| lineType | heavy rail ⓘ |
| locatedIn |
Fukuoka Prefecture
ⓘ
Japan Railways Group territory ⓘ Kyushu ⓘ |
| openedForTraffic | early 20th century ⓘ |
| operator |
JR Kyushu
ⓘ
linked to:
Kyushu Railway Company
|
| owner | Kyushu Railway Company ⓘ |
| partOf |
JR Kyushu network
ⓘ
linked to:
Kyushu Railway Company
|
| primaryFunction | regional passenger transport ⓘ |
| regionServed | Chikuho region ⓘ |
| servesArea |
Iizuka
ⓘ
Kama ⓘ Kurate District ⓘ Nogata ⓘ
linked to:
Nōgata
|
| serviceType |
local trains
ⓘ
rapid trains ⓘ |
| status | in operation ⓘ |
| trackGauge | 1067 mm ⓘ |
| usesSignalling | automatic block signalling ⓘ |
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: Chikuho Main Line Description of subject: The Chikuho Main Line is a regional railway line in Fukuoka Prefecture, Japan, operated by JR Kyushu and known for connecting former coal-mining areas such as Iizuka with larger urban centers.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Chikuho Main Line
subject linked to:
Wakamatsu
linked to: Chikuho Main Line
linked to: Chikuho Main Line
linked to: Chikuho Main Line