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.

Example Input: Category: A WALK ACROSS THE CHARLES BRIDGE 
Clue: Originally called Stone Bridge, the Charles Bridge was built with this "stone", like the walls of the White House
Example Output: sandstone

Example Input: Category: POLITICIANS 
Clue: This champion stock-car racer lost the 1996 race for North Carolina's Secretary of State
Example Output: richard petty

Example Input: Category: CANADIAN CAPITALS 
Clue: Commercial cod fishing, long a mainstay of this Newfoundland capital, declined to almost nothing by 1990
Example Output:
st. john\'s