83225
This transformation also preserves Kepler 's third law , namely , that the semiaxis " a " and the period " T " form a constant " " T " / " a " .
 person: Kepler
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: Kepler 
Answer:
 person: Kepler