Complex sentence: John A. DiBiaggio (born 1932) was president of Michigan State University from 1985 to 1992, and president of Tufts University from 1992 to 2001.
Split into simpler sentences: John A. DiBiaggio (born 1932) was the president of Michigan State University from 1985 to 1992. Subsequently, he served as the president of Tufts University from 1992 to 2001.