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: A DELICATE OPERATION 
Clue: A bypass operation may bypass the carotid or coronary one of these

Answer: artery


Question: Category: 19th CENTURY LITERARY QUOTES 
Clue: This vessel under Captain Nemo was "cigar in shape" with "two hulls, one inside, the other outside"

Answer: the nautilus


Question: Category: U.S. HISTORY 
Clue: On August 21, 1959 it became our 50th state

Answer:
hawaii