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These singer-songwriters included Bob Dylan , Neil Young , John Lennon , Van Morrison , Willie Nelson , Paul Simon , Leonard Cohen , and Joni Mitchell .
 Bob Dylan, Neil Young, John Lennon, Van Morrison, Willie Nelson, Paul Simon, Leonard Cohen, Joni Mitchell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Bob Dylan, Neil Young, John Lennon, Van Morrison, Willie Nelson, Paul Simon, Leonard Cohen, Joni Mitchell