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what are the best reviewed movie rock ballads from the 1980s
 average ratings: best reviewed; song: rock; year: 1980s
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: genre, year, plot, average ratings, actor, title, song, character, rating, review, director, trailer 
Text: {0} 
 Entities: best reviewed, rock, 1980s 
Answer:
 average ratings: best reviewed; song: rock; year: 1980s