Complex sentence: Oran K. Gragson (February 14,1911--October 7,2002) was the mayor of Las Vegas, Nevada from 1959 to 1975.
Split into simpler sentences: Oran K. Gragson (February 14,1911--October 7,2002) was an American politician. He was the mayor of Las Vegas, Nevada from 1959 to 1975.