Complex sentence: He attended St. Columb's College in Derry, where he befriended fellow-student Seamus Heaney, Queen's University Belfast (BA and MA) and Pembroke College, Cambridge University (PhD).
Split into simpler sentences: He attended St. Columb's College in Derry, where he befriended fellow-student Seamus Heaney. He also attended Queen's University Belfast (BA and MA) and Pembroke College, Cambridge University (PhD).