Complex sentence: The Church of St. John the Martyr was a Roman Catholic parish church in the Roman Catholic Archdiocese of New York, located at 250 East 72nd Street, Upper East Side, Manhattan, New York City, New York.
Split into simpler sentences: The Church of St. John the Martyr was a Roman Catholic parish church in the Roman Catholic Archdiocese of New York, located at 250 East 72nd Street, Manhattan, New York City. The church was located at 250 East 72nd Street, Upper East Side, Manhattan, New York City, New York.