Original sentence: It is the first in a trilogy of films that function as a prequel to the original trilogy of Star Wars films and, in chronological story order, the first in what will form a six-part saga with the completion of Star Wars Episode III: Revenge of the Sith in May 2005
Edited sentence: It is the first in a trilogy of films that function as a prequel to the original classic end trilogy of Star Wars films and, in chronological story order, the first in what will form a six-part saga with the completion of Star Wars Episode III: Revenge of the Sith in May 2005