9599
what is the film directed by george lucas with both darth vader and yoda
 george lucas, darth vader, yoda
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: genre, year, plot, average ratings, actor, title, song, character, rating, review, director, trailer 
Text: {0} 
Answer:
 george lucas, darth vader, yoda