Complex sentence: In 1956, Mac Eoin spent a few months working at the Dublin Institute for Advanced Studies (DIAS), but left for Iceland when he was accepted a scholarship to study Icelandic language and literature at the University of Reykjavik.
Split into simpler sentences: In 1956, Mac Eoin spent a few months working at the Dublin Institute for Advanced Studies (DIAS). However, he left for Iceland when he was accepted a scholarship to study Icelandic language and literature at the University of Reykjavik.