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.

Category: LITERARY TRILOGIES 
Clue: "Number One" is actually the number two novel in a trilogy by this author of "U.S.A."
john dos passos

Category: AMERICAN DATEBOOK 
Clue: On October 4, 1957 Sputnik was launched & this Jerry Mathers TV show premiered
leave it to beaver

Category: PRESIDENTS' CHILDREN 
Clue: They're the only 2 sons of U.S. presidents to be elected president

george w. bush and john quincy adams