87217
He was a co-founder and the lead guitarist of the alternative rock band R.E.M. He also plays mandolin on several R.E.M. songs .
 R.E.M., R.E.M.
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 R.E.M., R.E.M.