251389
Biography The Circle Jerks were formed in Southern California in 1979 , and originally comprised Keith Morris on vocals , Greg Hetson on guitar , Roger Rogerson on bass and Lucky Lehrer on drums .
 Keith Morris, Greg Hetson, Lucky Lehrer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Keith Morris, Greg Hetson, Lucky Lehrer