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He challenged seven other swimmers on the fourth heat , including two-time Olympians Joshua Ilika Brenner of Mexico and Giancarlo Zolezzi of Chile .
 Joshua Ilika Brenner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Joshua Ilika Brenner