323933
The park was popular throughout the 1950s and 1960s and it attracted many of the top entertainers of the era , including Johnny Cash , Jerry Lee Lewis , The Righteous Brothers , Roy Acuff and Conway Twitty .
 Johnny Cash, Jerry Lee Lewis, Roy Acuff, Conway Twitty
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Johnny Cash, Jerry Lee Lewis, Roy Acuff, Conway Twitty