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Biography According to the biography published in the beginning of his book Free Enterprise : The Opium of the American People ( 1972 ) , Lebow was " an executive , officer , and director of large corporations " .
 Lebow
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lebow