TASK DEFINITION: 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.
PROBLEM: Category: "W"HODUNNIT? 
Clue: He was the first U.S. president to be unanimously elected

SOLUTION: george washington

PROBLEM: Category: SONGS 
Clue: The title song in an Elvis film, it was written for the 1937 Bing Crosby film "Waikiki Wedding"

SOLUTION: blue hawaii

PROBLEM: Category: JOHN/PAUL 
Clue: Paul wrote this paean to Soviet women while in India with the Maharishi Mahesh Yogi

SOLUTION:
"back in the u.s.s.r."