Iyo Railway
E868219
Iyo Railway is a regional private railway company in Ehime Prefecture, Japan, best known for operating rail and tram services in and around the city of Matsuyama.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Iyo Railway canonical | 3 |
| Iyo Railway Gunchū Line infrastructure | 1 |
| Iyo Railway Matsuyama City Lines (tram network) | 1 |
| Iyo Railway city lines | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8534073 — 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: Iyo Railway Context triple: [Matsuyama, hasTransportation, Iyo Railway]
-
A.
Valsugana Railway
The Valsugana Railway is a regional rail line in northern Italy that connects Trento with Bassano del Grappa through the Valsugana valley.
-
B.
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.
-
C.
Nambu Line
The Nambu Line is a railway line in the Tokyo metropolitan area of Japan operated by JR East, connecting Kawasaki in Kanagawa Prefecture with Tachikawa in western Tokyo and serving as a key commuter route.
-
D.
Hukun railway
Hukun railway is a major Chinese rail line connecting Shanghai with Kunming, linking the country’s eastern coast to its southwestern interior.
-
E.
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.
- 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: Iyo Railway Target entity description: Iyo Railway is a regional private railway company in Ehime Prefecture, Japan, best known for operating rail and tram services in and around the city of Matsuyama.
-
A.
Valsugana Railway
The Valsugana Railway is a regional rail line in northern Italy that connects Trento with Bassano del Grappa through the Valsugana valley.
-
B.
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.
-
C.
Nambu Line
The Nambu Line is a railway line in the Tokyo metropolitan area of Japan operated by JR East, connecting Kawasaki in Kanagawa Prefecture with Tachikawa in western Tokyo and serving as a key commuter route.
-
D.
Hukun railway
Hukun railway is a major Chinese rail line connecting Shanghai with Kunming, linking the country’s eastern coast to its southwestern interior.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
private railway company
ⓘ
tram operator ⓘ |
| country | Japan ⓘ |
| electrification | DC overhead line ⓘ |
| fareSystem |
distance-based fares on railway lines
ⓘ
flat fares on tram lines ⓘ |
| gauge | 1,067 mm ⓘ |
| hasAbbreviation | Iyotetsu ⓘ |
| hasHeadquartersBuilding | Iyo Railway head office in Matsuyama ⓘ |
| hasMajorHub |
Matsuyama City Station
NERFINISHED
ⓘ
Matsuyama-shi Station (tram) ⓘ |
| hasOfficialWebsite | https://www.iyotetsu.co.jp/ ⓘ |
| hasRollingStockType |
electric multiple units
ⓘ
tramcars ⓘ |
| headquartersLocation |
Matsuyama, Ehime Prefecture, Japan
ⓘ
linked to:
Matsuyama, Ehime, Japan
|
| industry |
public transportation
ⓘ
rail transport ⓘ |
| isPrivateCompany | true ⓘ |
| languageOfName | Japanese ⓘ |
| locatedIn | Ehime Prefecture NERFINISHED ⓘ |
| locatedOnIsland | Shikoku ⓘ |
| notableFor | integrated operation of rail and tram in Matsuyama ⓘ |
| operates |
Iyo Railway Gunchū Line
ⓘ
Iyo Railway Matsuyama City Lines (tram network) ⓘ
linked to:
Iyo Railway
Iyo Railway Takahama Line ⓘ Iyo Railway Yokogawara Line ⓘ
linked to:
Iyo Railway Takahama Line
|
| operatesInCity | Matsuyama ⓘ |
| operatesService |
rail services in and around Matsuyama
ⓘ
tram services in and around Matsuyama ⓘ |
| owns |
Iyo Railway Gunchū Line infrastructure
ⓘ
linked to:
Iyo Railway
Iyo Railway Takahama Line infrastructure ⓘ Iyo Railway Yokogawara Line infrastructure ⓘ Matsuyama tramway infrastructure ⓘ |
| primaryLanguageOfOperations | Japanese ⓘ |
| railwayType |
regional railway
ⓘ
tramway ⓘ |
| regionServed |
Matsuyama metropolitan area
ⓘ
central Ehime Prefecture ⓘ |
| servesStation |
Gunchū Port Station
NERFINISHED
ⓘ
Matsuyama City Station NERFINISHED ⓘ Takahama Station NERFINISHED ⓘ Yokogawara Station NERFINISHED ⓘ |
| servesTourism | access to Matsuyama tourist sites ⓘ |
| serviceArea |
suburban rail in Ehime Prefecture
ⓘ
urban transit in Matsuyama ⓘ |
| usesTicketingSystem | IC card compatible ticketing (Iyotetsu IC card) ⓘ |
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: Iyo Railway Description of subject: Iyo Railway is a regional private railway company in Ehime Prefecture, Japan, best known for operating rail and tram services in and around the city of Matsuyama.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Iyo Railway
linked to: Iyo Railway
linked to: Iyo Railway