Question: who directed the film which Oscar-winning script was written by Howard Estabrook, who's associate film producer helping adapt the screenplay, although he was uncredited for the latter?
Sentence (from "Cimarron (1931 film)"): Cimarron is a 1931 Pre-Code Western film directed by Wesley Ruggles, starring Richard Dix and Irene Dunne, and featuring Estelle Taylor and Roscoe Ates.
Relevant evidence: Yes