Complex sentence: Hernán Siles Zuazo (21 March 1914-6 August 1996) was a Bolivian politician who served as constitutionally elected president twice, from 1956 to 1960 and again from 1982 to 1985.
Split into simpler sentences: Hernán Siles Zuazo (21 March 1914--6 August 1996) was a Bolivian politician. He served as his country's constitutionally elected president twice, from 1956 to 1960 and again from 1982 to 1985.