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RIO DE JANEIRO, BRAZIL - AUGUST 14: Sifan Hassan of the Netherlands competes in the Women's 1500 meter semifinals on Day 9 of the Rio 2016 Olympic Games at the Olympic Stadium on August 14, 2016 in Rio de Janeiro, Brazil. (Photo by Matthias Hangst/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 14:  Sifan Hassan of the Netherlands competes in the Women's 1500 meter semifinals on Day 9 of the Rio 2016 Olympic Games at the Olympic Stadium on August 14, 2016 in Rio de Janeiro, Brazil.  (Photo by Matthias Hangst/Getty Images)