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Last five U.S. Open Champions Lucas Glover , Graeme McDowell ( 15 ) , Rory McIlroy ( 4 ) , Webb Simpson , June 163 .
 Lucas Glover, Graeme McDowell, Rory McIlroy, Webb Simpson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lucas Glover, Graeme McDowell, Rory McIlroy, Webb Simpson