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D.M. Turner ( born Joseph Vivian ; 5 October 1962 - 31 December 1996 ) was an author , psychedelic researcher and psychonaut who wrote two books on psychoactives and entheogens .
 Turner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Turner