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In his spare time he studied botany , and through a mutual friend met German botanist Albrecht Wilhelm Roth ( 1757 – 1834 ) .
 person: Albrecht Wilhelm Roth
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: Albrecht Wilhelm Roth 
Answer:
 person: Albrecht Wilhelm Roth