Complex sentence: Saldana starred as Gamora in the film "Guardians of the Galaxy" (2014), and will reprise her role of Neytiri in "Avatar 2" in 2015.
Split into simpler sentences: Saldana starred as Gamora in the film "Guardians of the Galaxy" (2014). Saldana will reprise her role of Neytiri in "Avatar 2" in 2015.