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The Third Millennium : A History of the World AD 2000-3000 is a 1985 book written by Brian Stableford and David Langford .
 Brian Stableford, David Langford
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Brian Stableford, David Langford