221 series EMU
E1038254
The 221 series EMU is a Japanese suburban electric multiple unit train operated by JR West, known for its use on commuter and rapid services in the Kansai region.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 221 series | 1 |
| 221 series EMU canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13375440 — 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: 221 series EMU Context triple: [Yamatoji Rapid Service, rollingStock, 221 series EMU]
-
A.
207 series EMU
The 207 series EMU is a Japanese electric multiple unit commuter train type operated primarily in the Kansai region by JR West.
-
B.
321 series EMU
The 321 series EMU is a Japanese electric multiple unit train type operated by JR West for commuter services in the Kansai region.
-
C.
201 series EMU
The 201 series EMU is a Japanese electric multiple unit train type introduced by Japanese National Railways in the late 1970s and used extensively on urban commuter lines such as those in the Osaka and Tokyo areas.
-
D.
205 series EMU
The 205 series EMU is a Japanese commuter electric multiple unit train type introduced by Japanese National Railways and widely used on busy urban and suburban lines, particularly around the Tokyo area.
-
E.
446 series EMU
The 446 series EMU is a type of electric multiple unit train used for commuter and regional passenger services.
- 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: 221 series EMU Target entity description: The 221 series EMU is a Japanese suburban electric multiple unit train operated by JR West, known for its use on commuter and rapid services in the Kansai region.
-
A.
207 series EMU
The 207 series EMU is a Japanese electric multiple unit commuter train type operated primarily in the Kansai region by JR West.
-
B.
321 series EMU
The 321 series EMU is a Japanese electric multiple unit train type operated by JR West for commuter services in the Kansai region.
-
C.
201 series EMU
The 201 series EMU is a Japanese electric multiple unit train type introduced by Japanese National Railways in the late 1970s and used extensively on urban commuter lines such as those in the Osaka and Tokyo areas.
-
D.
205 series EMU
The 205 series EMU is a Japanese commuter electric multiple unit train type introduced by Japanese National Railways and widely used on busy urban and suburban lines, particularly around the Tokyo area.
-
E.
446 series EMU
The 446 series EMU is a type of electric multiple unit train used for commuter and regional passenger services.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese train type
ⓘ
electric multiple unit ⓘ |
| bogieType | bolsterless bogies ⓘ |
| brakeType |
electro-pneumatic brake
ⓘ
regenerative brake ⓘ |
| carBodyMaterial | steel ⓘ |
| carLength | 20 m class ⓘ |
| country | Japan ⓘ |
| couplingCompatibility |
223 series EMU
ⓘ
225 series EMU ⓘ |
| designedFor |
high-frequency commuter services
ⓘ
improved passenger comfort ⓘ |
| doorConfiguration | 3 pairs per side per car ⓘ |
| doorControl | automatic doors ⓘ |
| electricSystem | 1,500 V DC overhead ⓘ |
| enteredService | 1989 ⓘ |
| family | JR West suburban EMU ⓘ |
| formation |
2-car sets
ⓘ
4-car sets ⓘ 6-car sets ⓘ 8-car sets ⓘ |
| introduced | 1989 ⓘ |
| manufacturer |
Kawasaki Heavy Industries
ⓘ
Kinki Sharyo ⓘ |
| operator |
JR West
ⓘ
West Japan Railway Company ⓘ |
| operatorCode |
JRW 221 series
ⓘ
linked to:
JR West 221 series
|
| operatorColorScheme | JR West white and blue livery ⓘ |
| operatorRegion | JR West Urban Network ⓘ |
| owner | JR West ⓘ |
| powerCollectionMethod | pantograph ⓘ |
| powerType | electric ⓘ |
| refurbishment | interior refurbishment program in 2010s ⓘ |
| regionServed | Kansai region ⓘ |
| serviceStatus | in service ⓘ |
| serviceType |
commuter
ⓘ
rapid ⓘ suburban ⓘ |
| successor |
223 series EMU
ⓘ
225 series EMU ⓘ |
| trackGauge |
1067 mm
ⓘ
Cape gauge ⓘ |
| usedOnLine |
JR Kobe Line
ⓘ
JR Kyoto Line ⓘ Kosei Line NERFINISHED ⓘ Kusatsu Line NERFINISHED ⓘ Manyo-Mahoroba Line NERFINISHED ⓘ Nara Line ⓘ Yamatoji Line NERFINISHED ⓘ |
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: 221 series EMU Description of subject: The 221 series EMU is a Japanese suburban electric multiple unit train operated by JR West, known for its use on commuter and rapid services in the Kansai region.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 221 series EMU