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show me a list of all the directors who have been nominated for an oscar but havent won
 directors, oscar, havent won
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:
 directors, oscar, havent won