Complex sentence: During his later teens, Bol started playing basketball in 1979, playing in Sudan for several years with teams in Wau and Khartoum, where he experienced racial hatred from the northern Sudanese majority.
Split into simpler sentences: During his later teens, Bol started playing basketball in 1979, playing in Sudan for several years with teams in Wau and Khartoum. There he experienced racial hatred from the northern Sudanese majority.