15th IAAF World Athletics Championships Beijing 2015 - Day Four [Getty Images]

BEIJING, CHINA - AUGUST 25: Genzebe Dibaba of Ethiopia (L) on her way to winning gold in the Women's 1500 metres final during day four of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 25, 2015 in Beijing, China. (Photo by Patrick Smith/Getty Images)

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