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.

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

Category: WATCHMAKER, WATCHMAKER 
Clue: In 1924 England's John Harwood patented a watch that could do this to itself thanks to an internal swinging weight
wind itself

Category: BODIES OF WATER 
Clue: An agricultural area through which this Scottish river flows is the home of a breed of horse

clyde