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The Milnor – Thurston kneading theory is a mathematical theory which analyzes the iterates of piecewise monotone mappings of an interval into itself .
 person: Milnor; person: Thurston
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: Milnor, Thurston 
Answer:
 person: Milnor; person: Thurston