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Sandberg became a student at the Royal Swedish Academy of Arts 's preparatory school ( Swedish : Konstakademiens principskola ) in 1794 .
 person: Sandberg; organization: Royal Swedish Academy of Arts; organization: Swedish
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: Sandberg, Royal Swedish Academy of Arts, Swedish 
Answer:
 person: Sandberg; organization: Royal Swedish Academy of Arts; organization: Swedish