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.

[EX Q]: Category: LANDMARKS 
Clue: Some of its pieces, which weighed up to 50 tons, were quarried at Marlborough Downs, about 20 miles away
[EX A]: stonehenge

[EX Q]: Category: AFRICAN CAPITALS 
Clue: To get the name of its country, add 2 letters to the end of this world capital city
[EX A]: tunis

[EX Q]: Category: GEOGRAPHY NEWS 
Clue: On the initiative of Sen. Patrick Leahy, in 1998 it was designated the sixth Great Lake
[EX A]:
lake champlain