Complex sentence: Douglas ("Doug") Fernández (born November 22,1959) is a retired male decathlete from Venezuela, who's major achievement was winning the silver medal at the 1983 Pan American Games in Caracas.
Split into simpler sentences: Douglas ("Doug") Fernández (born November 22,1959) is a retired male decathlete from Venezuela. His major achievement was winning the silver medal at the 1983 Pan American Games in Caracas.