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In a 1998 paper on San Francisco street sex workers ( one of the populations also included in the above-mentioned " Prostitution in Nine Countries " study ) , Farley and co-author Howard Barkan report notable lifetime histories of violence in the lives of those surveyed .
 person: Farley
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Farley 
Answer:
 person: Farley