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: LITERARY SEQUELS 
Clue: "The Restaurant at the End of the Universe" was one of Douglas Adams' sequels to this novel

Answer: the hitchhiker\'s guide to the galaxy


Question: Category: PLACES OF INCARCERATION 
Clue: "Shark Island" Prison is part of Dry Tortugas National Park in the extreme southwest of this state

Answer: florida


Question: Category: PRESIDENTS AT REST 
Clue: At his national historic site in West Branch, Iowa

Answer:
hoover