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.
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Question: Category: PAINTERS 
Clue: His grandson was the cinematographer of "Barbarella" & "The Spy Who Loved Me"

Answer: pierre auguste renoir


Question: Category: GEORGE WASHINGTON 
Clue: In 1798 George wrote to John Greenwood, a man in this profession, "I am...ready to pay what ever you may charge me"

Answer: dentist


Question: Category: OPERA INSPIRATIONS 
Clue: Scholars think that a panpipe found by Captain Cook in what is now Vanuatu inspired this 18th century opera

Answer:
the magic flute