JR West 321 series EMU
E279191
The JR West 321 series EMU is a Japanese commuter electric multiple unit train operated by West Japan Railway Company, primarily used for high-frequency urban and suburban services in the Kansai region.
All labels observed (3)
| Label | Occurrences |
|---|---|
| JR West 321 series | 2 |
| JR West 321 series EMU canonical | 1 |
| JR West commuter EMU | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2567372 — 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: JR West 321 series EMU Context triple: [JR Kobe Line, primaryRollingStockType, JR West 321 series EMU]
-
A.
E233 series EMU
The E233 series EMU is a modern Japanese commuter train type operated by JR East, known for its high capacity, reliability, and widespread use on busy urban and suburban lines around Tokyo.
-
B.
E231 series EMU
The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
-
C.
E235 series EMU
The E235 series EMU is a modern Japanese commuter train operated by JR East, notable for its advanced onboard information systems, energy-efficient design, and use on busy urban lines in the Tokyo area.
-
D.
Keio 1000 series EMU
The Keio 1000 series EMU is a Japanese electric multiple unit train operated by Keio Corporation, known for serving Tokyo’s Inokashira Line with modern, colorful commuter rolling stock.
-
E.
Class 745 EMU
The Class 745 EMU is a modern electric multiple unit train used on regional and intercity services in the UK, built for high-capacity, high-comfort passenger operations.
- 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: JR West 321 series EMU Target entity description: The JR West 321 series EMU is a Japanese commuter electric multiple unit train operated by West Japan Railway Company, primarily used for high-frequency urban and suburban services in the Kansai region.
-
A.
E233 series EMU
The E233 series EMU is a modern Japanese commuter train type operated by JR East, known for its high capacity, reliability, and widespread use on busy urban and suburban lines around Tokyo.
-
B.
E231 series EMU
The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
-
C.
E235 series EMU
The E235 series EMU is a modern Japanese commuter train operated by JR East, notable for its advanced onboard information systems, energy-efficient design, and use on busy urban lines in the Tokyo area.
-
D.
Keio 1000 series EMU
The Keio 1000 series EMU is a Japanese electric multiple unit train operated by Keio Corporation, known for serving Tokyo’s Inokashira Line with modern, colorful commuter rolling stock.
-
E.
Class 745 EMU
The Class 745 EMU is a modern electric multiple unit train used on regional and intercity services in the UK, built for high-capacity, high-comfort passenger operations.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
commuter train
ⓘ
electric multiple unit ⓘ |
| brakeType |
electro-pneumatic brake
ⓘ
regenerative brake ⓘ |
| carBodyMaterial | stainless steel ⓘ |
| category | Japanese commuter EMU ⓘ |
| country | Japan ⓘ |
| couplingType | Shibata-type ⓘ |
| designedBy | West Japan Railway Company ⓘ |
| designedFor | high-density commuter traffic ⓘ |
| doorConfiguration | 3 pairs per side per car ⓘ |
| doorLocation | side doors only ⓘ |
| doorType | sliding doors ⓘ |
| electrificationSystem | 1,500 V DC overhead catenary ⓘ |
| family |
JR West 321 series EMU
self-linksurface differs
ⓘ
surface form:
JR West commuter EMU
|
| formation | 7-car sets ⓘ |
| gaugeCategory | Cape gauge ⓘ |
| intendedRole | replacement and supplement for older commuter stock ⓘ |
| multipleWorking | compatible with JR West 207 series ⓘ |
| operationMode | bidirectional ⓘ |
| operator |
JR West
ⓘ
West Japan Railway Company ⓘ |
| operatorStyle | driver-only operation capable (on some services) ⓘ |
| operatorType | passenger ⓘ |
| owner | West Japan Railway Company ⓘ |
| passengerService | standard class only ⓘ |
| powerType | electric ⓘ |
| primaryUse |
suburban commuter services
ⓘ
urban commuter services ⓘ |
| railNetwork | JR West Urban Network ⓘ |
| railwayCompanyType | JR Group company ⓘ |
| railwaySystem | conventional lines ⓘ |
| regionServed | Kansai region ⓘ |
| serviceArea |
JR Kobe Line
ⓘ
JR Kyoto Line ⓘ JR Takarazuka Line ⓘ Osaka Loop Line ⓘ
surface form:
Osaka Loop Line (select services)
|
| serviceEnvironment | commuter rail ⓘ |
| serviceFrequencyRole | used on high-frequency timetables ⓘ |
| servicePattern |
all-stations services
ⓘ
rapid services (selected) ⓘ |
| serviceRegion |
Hyogo Prefecture
NERFINISHED
ⓘ
Kyoto Prefecture ⓘ Osaka–Kobe metropolitan area ⓘ
surface form:
Osaka metropolitan area
|
| serviceType | high-frequency stopping services ⓘ |
| trackGauge | 1,067 mm ⓘ |
| trackType | narrow gauge ⓘ |
| traction | electric traction ⓘ |
| usageStatus | in service ⓘ |
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: JR West 321 series EMU Description of subject: The JR West 321 series EMU is a Japanese commuter electric multiple unit train operated by West Japan Railway Company, primarily used for high-frequency urban and suburban services in the Kansai region.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
JR West 321 series
this entity surface form:
JR West commuter EMU
this entity surface form:
JR West 321 series