Question: Which film has the director who is older than the other, Via Pony Express or Lifeforce (Film)? 
Sentence (from "Lifeforce (film)"): Lifeforce is a 1985 British science fiction horror film directed by Tobe Hooper, written by Dan O'Bannon and Don Jakoby, and starring Steve Railsback, Peter Firth, Frank Finlay, Mathilda May, and Patrick Stewart.
Relevant evidence: Yes