Crossword Genius

Toy bags in supermarket, very clear (5,2,3)

Ross

I think it could be either:

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5

5,2,3

plain as day

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'clear' is the definition.
(thesaurus)

'toy bags in supermarket very' is the wordplay.
I cannot really understand how this works, but
'in' is present in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Guardian.
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