Yes, the Italian prison! (4)

I believe the answer is:

jail

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'prison' is the definition.
(jail can mean a prison)

'yes the italian' is the wordplay.
'yes' becomes 'ja' (I can't explain this - if you can you should give a lot more credence to this answer).
'the italian' becomes 'il' ('the' in Italian).
'ja'+'il'='JAIL'

Can you help me to learn more?

(Other definitions for jail that I've seen before include "Gaol" , "(Send to) prison" , "detention" , "sentence" , "Correctional institution" .)

I've seen this clue in the Evening Standard.

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