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: HI, I "Q" 
Clue: It's a synonym for idiosyncrasy
[EX A]: quirk

[EX Q]: Category: THE YOU-NIVERSE 
Clue: Containing 33 vertebrae, it's also known as the vertebral column
[EX A]: the spine

[EX Q]: Category: WORLD OF SCIENTISTS 
Clue: After 6 years in exile in Gorky, this physicist & human rights activist was allowed to return to Moscow in 1986
[EX A]:
andrei sakharov