 Complete the following phrase:  Kenyi took up middle-distance running in 2012 and was a specialist in the 800 and 1500 metre distances. He delayed his final year of high school in order to train for the Olympics. He was selected to represent South Sudan in the mens 1500 m and was placed in heat one, which included Matthew Centrowitz Jr. of the United States, the eventual gold medalist. Kenyis heat was won by 