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' '' Additional Voices : ' '' Hal Smith , Don Messick , Janet Waldo , Paul Frees , Doug Young
 Hal Smith, Don Messick, Janet Waldo, Paul Frees, Doug Young
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hal Smith, Don Messick, Janet Waldo, Paul Frees, Doug Young