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He overtook Sergei Avdeyev 's previous record for the career total time spent in space ( 747.59 days ) during Expedition 11 to the International Space Station .
 Sergei Avdeyev
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sergei Avdeyev