Question: Who was the director of the film whose success, along with that of An American Tail and The Land Before Time, prompted Steven Spielberg to establish his own animation studio?
Sentence (from "Who Framed Roger Rabbit"): Who Framed Roger Rabbit is a 1988 American live-action/animated fantasy film directed by Robert Zemeckis, produced by Frank Marshall and Robert Watts, and written by Jeffrey Price and Peter S. Seaman.
Relevant evidence: Yes