21174
Near the end of the nineteenth century , Ludwig Stickelberger obtained his theorem on the residue of the discriminant modulo four .
 person: Ludwig Stickelberger
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: Ludwig Stickelberger 
Answer:
 person: Ludwig Stickelberger