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)"): It would be RKO's most expensive production up to that date, and its winning of the top Oscar for Best Production would be only one of two ever won by that studio.
Relevant evidence: No