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Following the dissolution of The Gentle Soul , Pamela set up home in Mill Valley , California before joining Joe Cocker and Leon Russell for the Mad Dogs and Englishmen tour in 1970 .
 Pamela, Mill Valley, Joe Cocker, Leon Russell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pamela, Mill Valley, Joe Cocker, Leon Russell