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A survey conducted by Stacy Smith of the University of Southern California shows that only 7 % of directors , 13 % of writers and 20 % of producers in film and television are women .
 Stacy Smith, University of Southern California
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Stacy Smith, University of Southern California