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any pg 13 sci fi movies released in the 1990 s that had an alien hunt involved in it
 pg 13, sci fi, 1990 s, alien hunt
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:
 pg 13, sci fi, 1990 s, alien hunt