Complex sentence: He attended Macdonald College, a suburban campus of McGill University, which is located in Ste. Anne de Bellevue, Quebec, and returned to Shawville and worked as a gym teacher.
Split into simpler sentences: He attended Macdonald College, a suburban campus of McGill University, which is located in Ste. Anne de Bellevue, Quebec. He returned to Shawville and worked as a gym teacher.