 Umunya-Afurika yepfo Caster Semenya wimyaka 28 yamavuko ufite umudali wa Olympike mu gusiganwa ku maguru muri metero 800, ari kujuririra icyemezo cyimpuzamashyirahamwe yimikino ngororangingo ku isi ishaka kugena ingano ntarengwa yuwo musemburo wa kigabo. 