Question: What nationality is the director of film Billy Boy (1954 Film)?
Sentence (from "Billy Boy (1954 film)"): It is a spin-off of Avery's previous creation, Droopy, and stars his unnamed Southern-accented wolf, who previously appeared opposite Droopy in "The Three Little Pups" and in "Blackboard Jumble" and "Sheepwrecked."
Relevant evidence: No