Asian individuals coming in from Kolkata, say? (10)

I believe the answer is:

indonesian

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'kolkata say?' is the definition.
I can't judge whether this defines the answer.

'asian individuals coming in' is the wordplay.
'asian' becomes 'Indian ' (India is in Asia).
'individuals' becomes 'ones' (I've seen this before).
'coming in' is an insertion indicator.
'indian' going around 'ones' is 'INDONESIAN'.

'from' acts as a link.

Can you help me to learn more?

(Other definitions for indonesian that I've seen before include "Asian" , "Australian neighbour" .)

I've seen this clue in The Telegraph.

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