8804
what very popular r rated science fiction movies were released in the last two decades
 very popular, r, science fiction, last two decades
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:
 very popular, r, science fiction, last two decades