Question: Who was the director of the 1972 British horror film in which the actor, who played Leopold Mozart in "Amadeus", played a role?
Sentence (from "Pietro Antonio Lorenzoni"): Pietro Antonio Lorenzoni (1721–1782) was an Italian painter who is believed to have painted several portraits of Wolfgang Amadeus Mozart and his family: "The Boy Mozart" (1763), his sister Maria Anna Mozart in "Nannerl as a Child" (1763) and a portrait of their father Leopold Mozart (c. 1765).
Relevant evidence: No