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 "A Brief History of Time (film)"): The title derives from Hawking's bestselling book" A Brief History of Time", but whereas the book is an explanation of cosmology, the film is a biography of Hawking's life, featuring interviews with family members, colleagues, and even his childhood nanny.
Relevant evidence: No