Complex sentence: From 1978 to 1981 he continued his education at Oxford University's Trinity College and finally attended Graduate School at Stanford University, California where he graduated in 1985 with an MA degree in Political Science.
Split into simpler sentences: From 1978 to 1981 he continued his education at Oxford University's Trinity College. He attended Graduate School at Stanford University, California, where he graduated in 1985 with an MA degree in Political Science.