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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: MONTREAL EXPOSE 
Clue: The Basilique Notre-Dame has one of the largest ones of these in North America; it weighs 12 tons

SOLUTION: bell

PROBLEM: Category: STAND BY YOUR MANNEQUIN 
Clue: In a magazine called The Show Window, this Oz creator dispensed advice on mannequins & creative display

SOLUTION: l. frank baum

PROBLEM: Category: STAGE NAMES 
Clue: Riley is the first name of this guitarist whose stage initials stand for "Blues Boy"

SOLUTION:
b.b. king