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The logistic function was introduced in a series of three papers by Pierre François Verhulst between 1838 and 1847 , who devised it as a model of population growth by adjusting the exponential growth model , under the guidance of Adolphe Quetelet .
 person: Pierre François Verhulst; person: Adolphe Quetelet
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: Pierre François Verhulst, Adolphe Quetelet 
Answer:
 person: Pierre François Verhulst; person: Adolphe Quetelet