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BEIJING, CHINA - AUGUST 29: Silver medalist Caleb Mwangangi Ndiku of Kenya and gold medalist Mohamed Farah of Great Britain celebrate after the Men's 5000 metres final during day eight of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 29, 2015 in Beijing, China. (Photo by Christian Petersen/Getty Images for IAAF)

BEIJING, CHINA - AUGUST 29:  Silver medalist Caleb Mwangangi Ndiku of Kenya and gold medalist Mohamed Farah of Great Britain celebrate after the Men's 5000 metres final during day eight of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 29, 2015 in Beijing, China.  (Photo by Christian Petersen/Getty Images for IAAF)