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: MR. AND MRS. SMITH 
Clue: An annual festival in Sydney, Australia honors Maria Smith, the originator of this famous apple

SOLUTION: the granny smith apple

PROBLEM: Category: AMERICANA 
Clue: In 1986 this model kit company merged with its main competitor, Monogram

SOLUTION: revell

PROBLEM: Category: INITIALLY YOURS 
Clue: When this director's "The Birth of a Nation" was released in 1915, tickets were an unheard of $2

SOLUTION:
d.w. griffith