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Natalie Coughlin (L), Jessica Hardy (R) and Melissa Franklin (C) react after they competed in the final of the women's 4x100-metre freestyle swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center, in Shanghai, on July 24, 2011. They won silver. AFP PHOTO / FRANCOIS XAVIER MARIT (Photo credit should read FRANCOIS XAVIER MARIT/AFP/Getty Images)

U.S. swim star Natalie Coughlin

Eleven-time Olympic medalist Natalie Coughlin wants gold in London.