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In hacker - related contexts , such users are also divided into luser s and power user s. In projects in which the actor of the system is another system or a software agent , it is quite possible that there is no end-user for the system .
 None
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:  
Answer:
 None