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Mittelholtz was born in Toronto , Ontario where he received a Radio and Television Arts degree from Ryerson University in 1977 .
 Mittelholtz, Toronto, Ontario, Ryerson University
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mittelholtz, Toronto, Ontario, Ryerson University