Complex sentence: Liah Greenfeld (born 1954) holds the position of University Professor and Professor of Political Science and Sociology, as well as Director of the Institute for the Advancement of the Social Sciences, at Boston University.
Split into simpler sentences: Liah Greenfeld (born 1954) holds the position of University Professor and Professor of Political Science and Sociology. She is also Director of the Institute for the Advancement of the Social Sciences at Boston University.