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Gustav Storm ( 18 June 1845 – 23 February 1903 ) was a Norwegian historian , a professor at the University of Christiania from 1877 .
 person: Gustav Storm; organization: Norwegian; organization: University of Christiania
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: Gustav Storm, Norwegian, University of Christiania 
Answer:
 person: Gustav Storm; organization: Norwegian; organization: University of Christiania