Question: Which film has the director who is older than the other, A Brief History Of Time (Film) or Springtime In The Sierras? 
Sentence (from "William Witney"): He is best remembered for the movie serials he co-directed with John English for Republic Pictures such as" Daredevils of the Red CircleZorro's Fighting Legion" and" Drums of Fu Manchu".
Relevant evidence: No