Question: Which film has the director who is older, The Thunderstorm or Silk (2007 Film)?
Sentence (from "Silk (2007 film)"): American actor Michael Pitt stars in the lead role of the French silkworm smuggler Hervé Joncour, with British actress Keira Knightley as his wife, Hélène, a teacher and keen gardener.
Relevant evidence: No