TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: In the British Army, what rank falls between Major General and Colonel?

SOLUTION: british army

PROBLEM: Which city has sports teams known as the 'Maple Leafs' and the 'Blue Jays'?

SOLUTION: toronto blue jays

PROBLEM: Whose film career from 1932 to 1966 included starring roles in films such as To Catch A Thief, Arsenic and Old Lace and North By North West?

SOLUTION:
to catch a thief