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One of the photographic series by Julia Margaret Cameron , a pupil of the painter George Frederic Watts , was of mythical characters , for whom she used the children of friends and servants as models .
 person: Julia Margaret Cameron; person: George Frederic Watts
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: Julia Margaret Cameron, George Frederic Watts 
Answer:
 person: Julia Margaret Cameron; person: George Frederic Watts