Complex sentence: Roxbert Martin (born November 5,1969) is a former Jamaican 400 metres runner, who was selected for the Jamaican 4x400 metres relay team at the 1996 Summer Olympics and won a bronze medal.
Split into simpler sentences: Roxbert Martin (born November 5,1969) is a former Jamaican 400 metres runner. He was selected for the Jamaican 4x400 metres relay team at the 1996 Summer Olympics and won a bronze medal.