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Prominently featured in Hunter Thompson 's book Hell 's Angels : The Strange and Terrible Saga of the Outlaw Motorcycle Gangs , they were the second most powerful outlaw motorcycle club in California until they were forced out of the San Francisco Bay Area by the Hells Angels .
 Hunter Thompson, Angels, San Francisco Bay Area, Hells Angels
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hunter Thompson, Angels, San Francisco Bay Area, Hells Angels