46508
He had not mentioned the curved paths of the " external " fringes of a shadow ; but , as he later explained , that was because Newton had already done so .
 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