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how many sci fi movies were directed by ken hughes in the past eight decades and were rated well
 sci fi, ken hughes, past eight decades, rated well
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:
 sci fi, ken hughes, past eight decades, rated well