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N.O.M. 's founding members were : Sergey Kagadeev ( born 20 October 1964 , v. Rybnoye , Ryazan , vocals ) , Andrey Kagadeev ( born 9 July 1961 , Leningrad , bass guitar ) , Dmitriy Tikhonov ( b. 6 August 1964 , Vladivostok , - keyboards , vocals ) , Sergey Butuzov ( b. 10 June 1962 , Leningrad ) and Nikolai Rodionov ( drums , flute ) .
 Ryazan, Leningrad, Vladivostok, Leningrad, Nikolai
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ryazan, Leningrad, Vladivostok, Leningrad, Nikolai