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UFC 251 Post-Fight Matchmaking : Petr Yan ( {@Petr “No Mercy” Yan@} ) vs Aljamain Sterling ( {@Aljamain Sterling@} )
 UFC 251 Post-Fight Matchmaking, Petr Yan, Petr “No Mercy” Yan, Aljamain Sterling, Aljamain Sterling
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 UFC 251 Post-Fight Matchmaking, Petr Yan, Petr “No Mercy” Yan, Aljamain Sterling, Aljamain Sterling