Complex sentence: The script for the film (written by Ron Cowen and Daniel Lipman, and directed by John Erman) spent two years in development and underwent at least 13 rewrites before the standards division at the network would clear it for airing.
Split into simpler sentences: The script for the film was written by Ron Cowen and Daniel Lipman, and directed by John Erman. It spent two years in development and underwent at least thirteen rewrites before the standards division at the network accepted it for airing.