Question: So Long, Scarecrow is titled in reference to which 1939 musical fantasy film?
Sentence (from "The Wizard of Oz (1939 film)"): Widely considered to be one of the greatest films in American history, it is the best-known and most commercially successful adaptation of L. Frank Baum's 1900 children's book, "The Wonderful Wizard of Oz."
Relevant evidence: No