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In 2003 , he completed " Correspondances " , a song-cycle for soprano and orchestra inspired by poems and letters by Prithwindra Mukherjee , Rainer Maria Rilke , Aleksandr Solzhenitsyn , and Vincent van Gogh .
 Prithwindra Mukherjee, Rainer Maria Rilke, Aleksandr Solzhenitsyn, Vincent van Gogh
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Prithwindra Mukherjee, Rainer Maria Rilke, Aleksandr Solzhenitsyn, Vincent van Gogh