Complex sentence: Earle Cabell (October 27,1906--September 24,1975), was a Texas politician who served as mayor of Dallas, Texas, during the assassination of John F. Kennedy and was later a U.S. Representative.
Split into simpler sentences: Earle Cabell (October 27,1906--September 24,1975), was a Texas politician who served as mayor of Dallas, Texas. Cabell was mayor at the time of the assassination of John F. Kennedy and was later a U.S. Representative.