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He found , for example , that cotton prices followed a Lévy stable distribution with parameter " α " equal to 1.7 rather than 2 as in a Gaussian distribution .
 person: Lévy; person: Gaussian
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: Lévy, Gaussian 
Answer:
 person: Lévy; person: Gaussian