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and are controlled by David Tepper , whose purchase of the team from founder Jerry Richardson was unanimously approved by league owners on May 22 , 2018 .
 David Tepper, Jerry Richardson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 David Tepper, Jerry Richardson