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During his four years at Villanova , Schelle was the keyboard player in various regional rock bands , and also Composer in Residence for the Villanova Graduate Theatre , scoring productions of Waiting for Godot , Rhinoceros , and other modernist classics directed by Irene Baird and David Rabe .
 Villanova, Schelle, Villanova, David Rabe
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Villanova, Schelle, Villanova, David Rabe