Osaka Metro 21 series
E1139431
UNEXPLORED
The Osaka Metro 21 series is a type of electric multiple unit train used on Osaka’s subway network, known for its stainless-steel body and service on several key urban lines.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Osaka Metro 21 series canonical | 1 |
| Osaka Municipal Subway 21 series | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T15097730 — 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: Osaka Metro 21 series Context triple: [Y Line, hasRollingStock, Osaka Metro 21 series]
-
A.
Osaka Metro 23 series
The Osaka Metro 23 series is a type of electric multiple unit train operated on Osaka’s subway network, specifically serving the Yotsubashi Line.
-
B.
Osaka Metro 20 series
The Osaka Metro 20 series is a type of electric multiple unit train used on Osaka's subway network, known for its stainless-steel construction and service on several key lines.
-
C.
Osaka Metro 25 series
The Osaka Metro 25 series is a type of electric multiple unit train used for passenger services on Osaka’s subway network.
-
D.
Osaka Metro 24 series
The Osaka Metro 24 series is a type of electric multiple unit train used for urban rapid transit services on Osaka’s subway network.
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E.
Osaka Metro 30000 series
The Osaka Metro 30000 series is a modern electric multiple unit train type operated by Osaka Metro, featuring air conditioning, energy-efficient systems, and improved passenger comfort for urban subway 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: Osaka Metro 21 series Target entity description: The Osaka Metro 21 series is a type of electric multiple unit train used on Osaka’s subway network, known for its stainless-steel body and service on several key urban lines.
-
A.
Osaka Metro 23 series
The Osaka Metro 23 series is a type of electric multiple unit train operated on Osaka’s subway network, specifically serving the Yotsubashi Line.
-
B.
Osaka Metro 20 series
The Osaka Metro 20 series is a type of electric multiple unit train used on Osaka's subway network, known for its stainless-steel construction and service on several key lines.
-
C.
Osaka Metro 25 series
The Osaka Metro 25 series is a type of electric multiple unit train used for passenger services on Osaka’s subway network.
-
D.
Osaka Metro 24 series
The Osaka Metro 24 series is a type of electric multiple unit train used for urban rapid transit services on Osaka’s subway network.
-
E.
Osaka Metro 30000 series
The Osaka Metro 30000 series is a modern electric multiple unit train type operated by Osaka Metro, featuring air conditioning, energy-efficient systems, and improved passenger comfort for urban subway services.
- F. None of above. chosen
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Osaka Metro 21 series