Complex sentence: In 2015, Isaac portrayed Nathan in the science fiction film "Ex Machina", and co-stared in the film', released in December, playing Poe Dameron, an X-wing pilot.
Split into simpler sentences: In 2015, Isaac portrayed Nathan in the science fiction film "Ex Machina". He also co-stared in the film', released in December 2015, playing Poe Dameron, an X-wing pilot.