50665
Because of this , the " Principia " has been called " a book dense with the theory and application of the infinitesimal calculus " in modern times and in Newton 's time " nearly all of it is of this calculus .
 person: Newton
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: Newton 
Answer:
 person: Newton