43805
Proved by Karl Menger in 1927 , it characterizes the connectivity of a graph .
 person: Karl Menger
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: Karl Menger 
Answer:
 person: Karl Menger