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.

[Q]: Category: "R" TOWN 
Clue: This Southern capital covers 63 square miles on both sides of the James River
[A]: richmond, virginia


[Q]: Category: BRITISH SPELLING BEE 
Clue: At the pub, it's beer from a keg, not a bottle
[A]: d-r-a-u-g-h-t


[Q]: Category: WORD ORIGINS 
Clue: This word meaning something not fully understood is from the Greek musterion, "secret rite"
[A]:
mystery