Complex sentence: Uberto Zanolli (1917--1994) was a Italo-Mexican composer, orchestra director, and writer, who was an engineer official for the Italian army during World War II, and a prisoner for two years in Nazi concentration camps.
Split into simpler sentences: Uberto Zanolli (1917--1994) was an Italo-Mexican composer, orchestra director and writer. He was an engineer official for the Italian army during World War II and a prisoner for two years in Nazi concentration camps.