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On Martin Luther King , Jr. . Day in 1995 , the Symphony released its second album through Koch , with works by Joseph Schwantner and Nicolas Flagello ; more than 30 United States radio stations broadcast Schwantner 's piece on the holiday to commemorate the civil rights leader .
 Koch, Joseph Schwantner, Nicolas Flagello, Schwantner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Koch, Joseph Schwantner, Nicolas Flagello, Schwantner