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Gunnar was responsible for the historical , theoretical , economic and statistical sections , while Alva drafted chapters on families , children , and specific programmatic proposals .
 person: Gunnar; person: Alva
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: Gunnar, Alva 
Answer:
 person: Gunnar; person: Alva