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 consistency, answers should be in all lower cased letters.

Q: Category: FRANKS 
Clue: The Atreides family, exiled on Arrakis, starred in the "Chronicles of Dune" by this sci-fi author

A: frank herbert
****
Q: Category: WINE 
Clue: The Douro Valley in this country is an important port producer

A: portugal
****
Q: Category: ARCHAEOLOGY 
Clue: Kennewick Man, discovered in 1996 in this state, has sparked a custody battle between Native Americans & scientists

A:
washington
****