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Rayburn 's political roots were imbedded in the administrations of Governor Earl Kemp Long , but he was also friendly with later chief executives John J. McKeithen and Edwin Washington Edwards .
 Rayburn, Earl Kemp Long, John J. McKeithen, Edwin Washington Edwards
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rayburn, Earl Kemp Long, John J. McKeithen, Edwin Washington Edwards