You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: ART & ARTISTS 
Clue: An X-ray of his "Blue Boy" has revealed the figure of a small dog that was painted out
thomas gainsborough

Category: NEW ZEALAND 
Clue: New Zealand leads the world in the production of this fruit also known as the Chinese gooseberry
kiwi fruit

Category: MYTHS & LEGENDS 
Clue: Ovid coined the name of this Greek god of dreams as an allusion to the forms seen in dreams

morpheus