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It turned out that Cherubina de Gabriak was the literary pseudonym for two people : and Maximilian Voloshin .
 Cherubina de Gabriak, Maximilian Voloshin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cherubina de Gabriak, Maximilian Voloshin