Complex sentence: On March 1,2016, Kevin Costner was cast in the film to play the head of the space program, and following him, singer Janelle Monáe signed on to play the third lead mathematician, Mary Jackson.
Split into simpler sentences: On March 1,2016, Kevin Costner was cast in the film to play the head of the space program. Singer Janelle Monáe signed on to play the third lead mathematician, Mary Jackson.