Complex sentence: The Diocese of Malacca was raised to the rank of an archdiocese in 1953 and was split and made into an ecclesiastical province with the Archdiocese of Malacca-Singapore as metropolitan see and the Diocese of Kuala Lumpur and the Diocese of Penang as suffragans.
Split into simpler sentences: The Diocese of Malacca was raised to the rank of an archdiocese in 1953. In 1955, the Archdiocese of Malacca was split and an ecclesiastical province was formed in its place with the Archdiocese of Malacca-Singapore as metropolitan see and the Diocese of Kuala Lumpur and the Diocese of Penang as suffragans.