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Among the works she played with the kuchka were Mussorgsky 's operas Zhenitba ( Marriage ) and Boris Godunov , plus Nikolai Rimsky-Korsakov 's The Maid of Pskov .
 Mussorgsky, Nikolai Rimsky-Korsakov
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mussorgsky, Nikolai Rimsky-Korsakov