Question: When is the director of film Champagne Charlie (1944 Film) 's birthday?
Sentence (from "Champagne Charlie (1944 film)"): Champagne Charlie is a 1944 British musical film directed by Alberto Cavalcanti and loosely based on the rivalry between the popular music hall performers George Leybourne (born Joe Saunders), who was called "Champagne Charlie" because he was the first artist to perform the song of that title, and Alfred Vance, who was known as "The Great Vance".
Relevant evidence: Yes