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His contemporaries at Wessex included producer Roy Thomas Baker , Chris Thomas , and engineers Tim Friese-Greene and Bill Price .
 Roy Thomas Baker, Chris Thomas, Tim Friese-Greene, Bill Price
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Roy Thomas Baker, Chris Thomas, Tim Friese-Greene, Bill Price