Discernment in top scenes in a UK Art Gallery (5)

I believe the answer is:

taste

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'discernment' is the definition.
(having discernment is having good taste)

I can't explain the remainder of the clue.

(Other definitions for taste that I've seen before include "gains experience" , "Discrimination - a sense" , "The ability to discern good quality" , "Sensation of flavour" , "One of the senses" .)

I've seen this clue in the Sydney Morning Herald.

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