Complex sentence: Walt Disney Pictures optioned the rights to the book and began work on the film in 2012; the film, "Queen of Katwe", stars Lupita Nyong'o and David Oyelowo.
Split into simpler sentences: Walt Disney Pictures optioned the rights to the book and began work on the film in 2012. The film, "Queen of Katwe", stars Lupita Nyong'o and David Oyelowo.