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: PRESIDENTIAL FACTS 
Clue: In 1919 this trustbuster's last words were "Please put out the light"

Answer: theodore roosevelt


Question: Category: "HARD" QUESTIONS 
Clue: Stubborn

Answer: hard-headed


Question: Category: BEFORE HE WAS PRESIDENT... 
Clue: He went to Stanford & became a mining engineer

Answer:
hoover