instruction:
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.
question:
Category: EXPLORERS 
Clue: John Speke died just before he was to debate this former exploring partner on the source of the Nile
answer:
sir richard burton


question:
Category: SHAKESPEARE 
Clue: "Twelfth Night" opens with, "If music be the food of love," do this
answer:
play on


question:
Category: THE HILLS 
Clue: Mills in the Gas Hills of Wyoming refine & press this element into the yellowcake form
answer:

uranium