RIO DE JANEIRO, BRAZIL - AUGUST 17: (L-R) Shelayna Oskan-Clarke of Great Britain, Ajee Wilson of the United States and Caster Semenya of South Africa compete in the Women's 800m - Round 1 heats on Day 12 of the Rio 2016 Olympic Games at the Olympic Stadium on August 17, 2016 in Rio de Janeiro, Brazil. (Photo by Ian Walton/Getty Images)
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