epa05503936 (L-R) Silver medalist Francine Niyonsaba of Burundi, gold medalist Caster Semenya of South Africa, and bronze medalist Margaret Nyairera Wambui of Kenya pose for a photo on the podium during the awarding ceremony for women’s 800m final of the Rio 2016 Olympic Games Athletics, Track and Field events at the Olympic Stadium in Rio de Janeiro, Brazil, 20 August 2016. EPA/YOAN VALAT Dostawca: PAP/EPA.

epa05503936 (L-R) Silver medalist Francine Niyonsaba of Burundi, gold medalist Caster Semenya of South Africa, and bronze medalist Margaret Nyairera Wambui of Kenya pose for a photo on the podium during the awarding ceremony for women's 800m final of the Rio 2016 Olympic Games Athletics, Track and Field events at the Olympic Stadium in Rio de Janeiro, Brazil, 20 August 2016.  EPA/YOAN VALAT Dostawca: PAP/EPA.