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He strongly influenced the politicians Francis William Reitz and Martinus Theunis Steyn , serving as a mentor for the two men who later became Presidents of the Orange Free State .
 person: Francis William Reitz; person: Martinus Theunis Steyn
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: Francis William Reitz, Martinus Theunis Steyn 
Answer:
 person: Francis William Reitz; person: Martinus Theunis Steyn