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.

Category: SIGNS & SYMBOLS 
Clue: Symbols of mystery, they're the mysterious doubles of the people who cast them
shadows

Category: BEER 
Clue: Lambic beer, fermented by wild yeasts, is mainly made in this Low Country
belgium

Category: GONE WITH THE WINDS 
Clue: Guinness lists Commonwealth Bay on this southern continent as the world's windiest place

antarctica