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In a letter to a school for blind students in the Vologda region , Nadezhda Krupskaya named it as her favourite songs alongside The Internationale .
 Nadezhda Krupskaya
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nadezhda Krupskaya