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are there some musical movies released in the last nine decades that are rated pg and average an eight rating
 musical, last nine decades, pg, eight
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:
 musical, last nine decades, pg, eight