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Throughout 1981 , Sammartino feuded with Larry Zbyszko ( who had engaged in a bitter feud with Bruno Sammartino throughout 1980 ) on the independent circuit .
 Sammartino, Larry Zbyszko, Bruno Sammartino
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sammartino, Larry Zbyszko, Bruno Sammartino