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Mark Wildman has been a professor of voice at the Royal Academy of Music since 1982 and Head of Vocal Studies since 1991 .
 Mark Wildman, Royal Academy of Music
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mark Wildman, Royal Academy of Music