Complex sentence: The Italian Catholic diocese of Cesena-Sarsina, in Emilia Romagna is created on September 30,1986, after the diocese of Sarsina was united with the historic diocese of Cesenaas a suffragan of the archdiocese of Ravenna-Cervia.
Split into simpler sentences: The Italian Catholic diocese of Cesena-Sarsina, in Emilia Romagna, has existed since 1986. It is a suffragan of the archdiocese of Ravenna-Cervia.