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At the first Olympic qualifier in March 2008 , however , he defeated Argentinian Diego Chaves and PanAm Champion Pedro Lima 19:10 to qualify .
 Argentinian, Pedro Lima
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Argentinian, Pedro Lima