Question: Which film has the director who is older than the other, Krakatit or Bangaaru Kalalu? 
Sentence (from "Krakatit"): Krakatit is a 1948 Czechoslovak science fiction mystery film directed by Otakar Vávra, starring Karel Höger as a chemist who suffers from delirium and regret after inventing a powerful explosive.
Relevant evidence: Yes