Nymph coming to life, having light refreshment in a marquee? (7)

I believe the answer is:

galatea

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But I can't explain it at all! Could you help me understand?

(Other definitions for galatea that I've seen before include "Pygmalion's statue that lived" , "Pygmalion's brought-to-life statue" , "Pygmalion's statue brought to life by Aphrodite" .)

I've seen this clue in The Times.

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