Complex sentence: Born in Padova, Toso graduated at Centro Sperimentale di Cinematografia in 1939 and immediately after started his film career, that was particularly prolific in the 40's, in films in which he usually starred negative characters.
Split into simpler sentences: Born in Padova, Toso graduated from the Centro Sperimentale di Cinematografia in 1939 and immediately after started his film career. He was particularly prolific in the 1940s, in films in which he usually starred negative characters.