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Arthur Waldorf Thomas ( b. New Brunswick , N. J. February 18 , 1891 , d. March 22 , 1982 , New York , N. Y. ) was a professor and chemist who specialized in colloid chemistry .
 Arthur
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Arthur