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" I just kept saying to myself , ' keep giving yourself the best chance to win , keep battling , maybe something will happen , ' " said the 26-year-old O'Brien , ranked 65th .
 person: O'Brien
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 person: O'Brien