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Nikolai Simonov ( December 4 , 1901 – April 20 , 1973 ) was a Soviet film and stage actor .
 Nikolai Simonov, Soviet
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nikolai Simonov, Soviet