91255
Frederic Rzewski , Henri Pousseur and Garrett List were among his teachers .
 Frederic Rzewski, Henri Pousseur, Garrett List
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Frederic Rzewski, Henri Pousseur, Garrett List