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.

Category: DOUBLE DOUBLE LETTERS 
Clue: A gathering at which Pete Seeger & Joan Baez, or an owl & a goat might sing
hootenanny

Category: OUT FOR A "SPIN" 
Clue: Finish your soda & pucker up: it's time to play this game
spin the bottle

Category: WEIGHTS & MEASURES 
Clue: This country once used a Cape foot, which was .314858 meters

south africa