21199
Markov showed that the law can apply to a random variable that does not have a finite variance under some other weaker assumption , and Khinchin showed in 1929 that if the series consists of independent identically distributed random variables , it suffices that the expected value exists for the weak law of large numbers to be true .
 person: Markov; person: Khinchin
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: Markov, Khinchin 
Answer:
 person: Markov; person: Khinchin