Complex sentence: A script had never been written, but notes by his assistant Claire Denis were enough to work from, and he immediately thought of Béart, who starred in La Belle Noiseuse, to play the carnal Marie.
Split into simpler sentences: A script had never been written, but notes by his assistant Claire Denis were enough to work from. He immediately thought of Béart, who starred in "La Belle Noiseuse", to play the carnal Marie.