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Stepan Sergeyevich Ganzey ( ; born May 30 , 1981 in Vladivostok ) is a retired Russian swimmer , who specialized in freestyle events .
 location: Vladivostok
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Vladivostok