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When Carnegie Mellon University professor David S. Touretzky spoke to the press about the Scientology-affiliated organization Applied Scholastics , Pouw said : " He is discredited in the field that he 's trying to comment on .
 Carnegie Mellon University, David S. Touretzky, Applied Scholastics, Pouw
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Carnegie Mellon University, David S. Touretzky, Applied Scholastics, Pouw