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Jim Parsons Dishes On Kaley Cuoco's Sister Briana Cuoco Competing On 'The Voice'

Jim Parsons chats on the Emmys 2013 red carpet about his "Big Bang Theory" co-star Kaley Cuoco's sister, Briana Cuoco, competing on NBC's "The Voice." What kind of relationship do the sisters have? Plus, has he heard Briana sing?