"Who knew?" (3)

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gee

'who knew?' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for gee that I've seen before include "Wow!" , "Word of encouragement to a horse" , "Golly" , "American exclamation" , "Horse - surprised expression" .)

I've seen this clue in the Newsday.

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