Complex sentence: Harford was educated at Aylesbury Grammar School and then at Brasenose College, Oxford, gaining a Bachelor of Arts degree in Philosophy, Politics and Economics (PPE) and then a Master of Philosophy degree in Economics in 1998.
Split into simpler sentences: Harford was educated at Aylesbury Grammar School and then at Brasenose College, Oxford. He obtained a Bachelor of Arts degree in Philosophy, Politics and Economics and later a Master of Philosophy in economics, in 1998.