Complex sentence: The Roman Catholic Archdiocese of Vancouver is a Roman Catholic archdiocese that includes part of the Province of British Columbia and includes the suffragan dioceses of Kamloops, Nelson, Prince George, and Victoria.
Split into simpler sentences: The Roman Catholic Archdiocese of Vancouver is a Roman Catholic archdiocese that includes part of the Province of British Columbia. It is the metropolitan see of the ecclesiastical province which includes the suffragan dioceses of Kamloops, Nelson, Prince George, and Victoria.