Question: Which film director is best known for the movie "Alvin Purple", Mark Robson or Tim Burstall?
Sentence (from "Tim Burstall"): Timothy "Tim" Burstall AM (20 April 1927 – 19 April 2004) was an English Australian film director, writer and producer, best known for hit Australian movie "Alvin Purple" (1973) and its sequel "Alvin Rides Again".
Relevant evidence: Yes