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Frege , Russell , Poincaré , Hilbert , and Gödel are some of the key figures in this development .
 person: Frege; person: Russell; person: Poincaré; person: Hilbert; person: Gödel
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: Frege, Russell, Poincaré, Hilbert, Gödel 
Answer:
 person: Frege; person: Russell; person: Poincaré; person: Hilbert; person: Gödel