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He was a pupil of painter Knud Bergslien ( 1879–81 ) of and Frits Thaulow in 1883 .
 person: Knud Bergslien; person: Frits Thaulow
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Knud Bergslien; person: Frits Thaulow