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Undo the Right " was previously recorded by Willie Nelson on his 1962 album And Then I Wrote , and " Hurts Do n't It " was previously recorded by Greg Holland on his 1994 debut album Let Me Drive .
 Willie Nelson, Greg Holland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Willie Nelson, Greg Holland