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Known primarily for his influential publications and recorded guitar courses in the 1960s , Gene was also a popular performer and a mentor to a large number of musicians through his teaching studios in Manhattan Beach , California .
 Gene, Manhattan Beach
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Gene, Manhattan Beach