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The resultant considerations led to Kurt Gödel 's paper ( 1931 ) - he specifically cites the paradox of the liar - that completely reduces rules of recursion to numbers .
 person: Kurt 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: Kurt Gödel 
Answer:
 person: Kurt Gödel