Complex sentence: Robert Gabriel Mugabe (;; born 21 February 1924) was the leader of Zimbabwe from 1980 to 2017, serving as Prime Minister from 1980 to 1987 and as President from 1987 to 2017.
Split into simpler sentences: Robert Gabriel Mugabe (;; born 21 February 1924) is a Zimbabwean politician and statesman. He was the leader of Zimbabwe from 1980 to 2017, serving as Prime Minister from 1980 to 1987 and as President from 1987 to 2017.