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From March to April 2012 , Rowe and Dempsey 's new musical , Brother Russia , premiered at the Signature Theatre .
 Rowe, Dempsey, Signature Theatre
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rowe, Dempsey, Signature Theatre