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: BASEBALL & THE PRESIDENCY 
Clue: As both vice president & president, he threw out a season's 1st pitch, each time for a different Senators franchise

Answer: richard nixon


Question: Category: U.S. PRESIDENTS 
Clue: Adventurous 26th president, he was 1st to ride in an automobile & an airplane

Answer: theodore roosevelt


Question: Category: LINES FROM LINCOLN 
Clue: Though it's not accurate, this meaning of the word "Mississippi" appears in one of Lincoln's most famous lines

Answer:
father of waters