instruction:
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.
question:
Category: MONTREAL EXPOSE 
Clue: The Basilique Notre-Dame has one of the largest ones of these in North America; it weighs 12 tons
answer:
bell


question:
Category: ON OUR MONEY 
Clue: Appropriately, this landmark is on the reverse of the $5 bill
answer:
the lincoln memorial


question:
Category: FILTHY RICH 
Clue: Worth over $15 billion, Robson, son of Sam, runs this company, the USA's largest private employer
answer:

wal-mart