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He has competed for the UFC Lightweight Championship twice and the UFC Featherweight Championship , but came up short against Sean Sherk , BJ Penn , and Jose Aldo respectively .
 organization: UFC; organization: UFC; person: Sean Sherk; person: BJ Penn; person: Jose Aldo
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: UFC; organization: UFC; person: Sean Sherk; person: BJ Penn; person: Jose Aldo