Complex sentence: Even after the film was reportedly finished, the Iranian producers of the film refused to release it; according to Welles in a letter to Selwart, it contains an excellent performance by this actor, as the Baron.
Split into simpler sentences: Even after the film was reportedly finished, the Iranian producers of the film refused to release it. According to Welles in a letter to Selwart, it contains an excellent performance by this actor, as the Baron.