Complex sentence: Blair Lee, III (May 19,1916--October 25,1985), a Democrat, was the acting Governor of Maryland in the United States from 1977 to 1979 in place of Marvin Mandel.
Split into simpler sentences: Blair Lee, III (May 19,1916--October 25,1985) was an American Democratic politician. He served as the Secretary of State of Maryland from 1969 to 1971, and was the acting Governor of Maryland from 1977 to 1979, in place of Marvin Mandel.