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Her father , Dr Karol Birger , had left his native Poland as a young man to join the great Dr Albert Schweitzer with whom he worked closely in Africa for several years .
 person: Birger; person: Albert Schweitzer
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: Birger, Albert Schweitzer 
Answer:
 person: Birger; person: Albert Schweitzer