Complex sentence: John W. Boyer (born October 17,1946 in Chicago) is the Dean of the College and the Martin A. Ryerson Distinguished Service Professor of History at the University of Chicago.
Split into simpler sentences: John W. Boyer (born October 17,1946 in Chicago) is an American historian and academic administrator. He is currently the Dean of the College and the Martin A. Ryerson Distinguished Service Professor of History at the University of Chicago.