Complex sentence: Because of the Communist regime, he secretly prepared for the priesthood, being parish priest in Plovdiv, Rakovski, Kaloyanovo, Duvanlii and Zhitnitsa.
Split into simpler sentences: Because of the Communist regime, he secretly prepared for the priesthood. He was parish priest in Plovdiv, Rakovski, Kaloyanovo, Duvanlii and Zhitnitsa.