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He is currently signed to Total Nonstop Action Wrestling ( TNA ) , where he performs as a member of the Aces & Eights under the ring name DOC , and is best known for his time with World Wrestling Entertainment ( WWE ) , where he appeared under the ring names Festus and Luke Gallows .
 Total Nonstop Action Wrestling, World Wrestling Entertainment
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Total Nonstop Action Wrestling, World Wrestling Entertainment