97413
In 1953 he was made a professor of insurance mathematics and mathematical statistics at the University of Oslo , a position he held until his retirement .
 organization: Oslo
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: Oslo 
Answer:
 organization: Oslo