Question: Why did the director of film Mother Knows Best (Film) die?
Sentence (from "Mother Knows Best (film)"): The film was Fox's first part talkie, using the Movietone sound system which had primarily been used for synchronised music scores and effects tracks in Fox features beforehand, although as early as "Mother Machree" (1928), a single synchronous singing sequence was included in the film.
Relevant evidence: No