Complex sentence: William Berry Hartsfield (February 28 1890-February 22 1971) was born in Atlanta, Georgia and served as its mayor from 1937 to 1941 and again from 1942 to 1962, making him the longest-serving mayor in Atlanta history.
Split into simpler sentences: William Berry Hartsfield (February 28 1890-February 22 1971) was an American politician. He was born in Atlanta, Georgia and served as its mayor from 1937 to 1941 and again from 1942 to 1962, making him the longest-serving mayor in Atlanta history.