Complex sentence: Following a three-year hiatus from acting, Morton provided the voice of Sola in the 2012 science fiction film "John Carter", based on "A Princess of Mars", the first book in the "Barsoom" series of novels.
Split into simpler sentences: Following a three-year hiatus from acting, Morton returned to the screen in 2012. She provided the voice of Sola in the science fiction film "John Carter", based on "A Princess of Mars", the first book in the "Barsoom" series of novels.