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Volume two , covering Mikhail Tal , Mikhail Botvinnik , Vasily Smyslov and Tigran Petrosian appeared later in 2003 .
 Mikhail Tal, Mikhail Botvinnik, Vasily Smyslov, Tigran Petrosian
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mikhail Tal, Mikhail Botvinnik, Vasily Smyslov, Tigran Petrosian