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The Stokes radius , Stokes-Einstein radius , or hydrodynamic radius RH , named after George Gabriel Stokes is the radius of a hard sphere that diffuses at the same rate as the molecule .
 person: Stokes; person: George Gabriel Stokes
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: Stokes, George Gabriel Stokes 
Answer:
 person: Stokes; person: George Gabriel Stokes