Question: What is the cause of death of director of film Safari Express?
Sentence (from "Duccio Tessari"): In 1964 he co-wrote Sergio Leone's "A Fistful of Dollars", one year later he gained an impressive commercial success and launched the Giuliano Gemma's career with "A Pistol for Ringo" and its immediate sequel, "The Return of Ringo".
Relevant evidence: No