Complex sentence: The Cathedral of Mary Help of Christians is the cathedral of the Roman Catholic Archdiocese of Shillong which covers the Khasi and Jaintia hills of Meghalaya.
Split into simpler sentences: The Cathedral of Mary Help of Christians is a Cathedral in Shillong, Meghalaya. It is the cathedral of the Roman Catholic Archdiocese of Shillong which covers the Khasi and Jaintia hills of Meghalaya.