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Downey was later awarded a Fulbright Scholarship to study with his mentors Honegger , Milhaud and Boulanger in Paris where he earned a Prix de Composition from the Paris Conservatoire National de Musique and a Ph.D. ( Docteur es Lettres ) from the University of Paris-Sorbonne .
 Downey, Paris Conservatoire, University of Paris-Sorbonne
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Downey, Paris Conservatoire, University of Paris-Sorbonne