37534
This includes his theory of beta decay , his work with non-linear systems , his discovery of the effects of slow neutrons , his study of pion-nucleon collisions , and his Fermi–Dirac statistics .
 person: Fermi–Dirac
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: Fermi–Dirac 
Answer:
 person: Fermi–Dirac