Passage: The Cathedral Church of Saint Mary in Murcia (Spanish: Iglesia Catedral de Santa María en Murcia), commonly called the Cathedral of Murcia, is a Catholic church in the city of Murcia, Spain. It is the only cathedral in use in the Roman Catholic Diocese of Cartagena in Spain.

Question: Which church is in use with the Roman Catholic Diocese of Cartagena?
The Cathedral Church of Saint Mary