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Davros first appeared in the 1975 serial " Genesis of the Daleks " , written by Terry Nation .
 person: Terry Nation
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: Terry Nation 
Answer:
 person: Terry Nation