77769
He sketched a program for proving the consistency of Zermelo–Fraenkel set theory using ultrafinitistic techniques in , and .
 person: Zermelo–Fraenkel
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: Zermelo–Fraenkel 
Answer:
 person: Zermelo–Fraenkel