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: CANADIAN CITIES 
Clue: The name of this provincial capital means "queen" in Latin

SOLUTION: regina, saskatchewan

PROBLEM: Category: MYSTERY NOVELS 
Clue: The first line of dialogue in this 1930 novel is spoken to secretary Effie Perine, "Yes, sweetheart?"

SOLUTION: the maltese falcon

PROBLEM: Category: PRESIDENTIAL BOOKS 
Clue: His writings include "The Naval War of 1812" & as co-writer, "The Deer Family"

SOLUTION:
theodore roosevelt