Question: What is the date of birth of the director of film Pride Of The Blue Grass (1939 Film)?
Sentence (from "Pride of the Blue Grass (1939 film)"): Gantry was bought and trained as a show horse by wrangler Eleanor Getzendaner but became blind at the age of 13 following two years of experiencing periodic ophthalmia, after which she patiently trained him to jump.
Relevant evidence: No