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.

[EX Q]: Category: BELGIUM, BELARUS OR BELIZE 
Clue: It's part of the British Commonwealth of Nations
[EX A]: belize

[EX Q]: Category: TWAIN TRACTS 
Clue: "The two went and stood side by side before a great mirror and lo, a miracle: there did not seem to have been any change"
[EX A]: the prince and the pauper

[EX Q]: Category: 300 YEARS AGO 
Clue: This architect who rebuilt London after the Great Fire of 1666 saw his work on Whitehall Palace burned in 1698
[EX A]:
sir christopher wren