Complex sentence: César Gaviria Trujillo (born March 31,1947) was the 28th President of Colombia from 1990 to 1994, and the 7th Secretary General of the Organization of American States from 1994 until 2004.
Split into simpler sentences: César Gaviria Trujillo (born March 31,1947) is a Colombian politician and a Latin American statesman. He served as President of Colombia from 1990 to 1994, and Secretary General of the Organization of American States from 1994 until 2004.