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I kjølvannet , translated as In the Wake ( 2002 ) , is a young man 's story of losing his family in the Scandinavian Star ferry disaster in 1990 ( Petterson himself lost his mother , father , younger brother and a niece in the disaster ) ; it won the Brage Prize for 2000 .
 person: Petterson
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: Petterson 
Answer:
 person: Petterson