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: ORGANIZATIONS 
Clue: It moved its HQ from Savannah to Wash. D.C. in 1913, & in 1917 began making each First Lady honorary pres.

SOLUTION: the girl scouts of the u.s.a.

PROBLEM: Category: BIBLICAL AKA 
Clue: This second king of Israel was "the sweet singer of Israel"

SOLUTION: king david

PROBLEM: Category: FILMS OF THE '60s 
Clue: Peter O'Toole was Oscar-nominated for playing the same king in these 2 movies

SOLUTION:
becket & the lion in winter