Complex sentence: He earned a B.A and M.A in Government & Politics at St. John's University, New York in 1980 and 1981, and a DPhil in politics from Oxford University in 1989.
Split into simpler sentences: He earned a B.A and M.A at St. John's University, New York in Government & Politics in 1980 and 1981. Olufemi Vaughan obtained a DPhil (PhD) in politics from Oxford University in 1989.