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Jeremy Burgess ( 16 April 1953 in Adelaide Hills , South Australia ) , is an Australian motorcycle racing chief engineer , having worked with three world champions : Wayne Gardner , Mick Doohan and Valentino Rossi .
 Jeremy Burgess, Adelaide, South Australia, Wayne Gardner, Mick Doohan, Valentino Rossi
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jeremy Burgess, Adelaide, South Australia, Wayne Gardner, Mick Doohan, Valentino Rossi