Question: Which film has the director who is older than the other, Dirigible (Film) or Battling Butler? 
Sentence (from "Buster Keaton"): Many of Keaton's films from the 1920s remain highly regarded, such as "Sherlock Jr." (1924), "The General" (1926), and "The Cameraman" (1928), with "The General" widely viewed as his masterpiece.
Relevant evidence: No