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Hired by major stable owners Harry Payne Whitney and Richard T. Wilson , Jr. , Eddie Dugan won the first of his three American Classic Races , riding Royal Tourist to victory in the Preakness Stakes .
 Harry Payne Whitney, Richard T. Wilson , Jr., Eddie Dugan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Harry Payne Whitney, Richard T. Wilson , Jr., Eddie Dugan