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Chart performance Roy Clark version In 1963 , Roy Clark released a version from his album Roy Clark Sings The Tip of My Fingers , titled " The Tips of My Fingers . "
 Roy Clark, Roy Clark, Roy Clark
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Roy Clark, Roy Clark, Roy Clark