claim: The director of The Crimson Circle (1929 film) is the film director who also appeared on screen as an actor. The director of Lullaby was not.
supporting_facts.key: Dziga Vertov
supporting_facts.key: Frederic Zelnik
supporting_facts.key: Frederic Zelnik
supporting_facts.key: Lullaby (1937 film)
supporting_facts.key: The Crimson Circle (1929 film)