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Donald A. Gillies , however , argued the ban is , in effect , the same as Karl Popper 's measure of the severity of a test .
 person: Donald A. Gillies; person: Karl Popper 's
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: Donald A. Gillies, Karl Popper 's 
Answer:
 person: Donald A. Gillies; person: Karl Popper 's