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Grace Cavalieri ( born 1932 ) is an award-winning American poet , playwright and radio host of " The Poet and the Poem " from the Library of Congress .
 Grace Cavalieri, Library of Congress
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Grace Cavalieri, Library of Congress