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Alfred Wesmael ( 1832-1905 ) was a Belgian professor of botany .
 person: Alfred Wesmael
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: Alfred Wesmael 
Answer:
 person: Alfred Wesmael