29752
In the same period the proportion of ethnic Russians decreased from 30.0 % to 25.6 % , the proportion of ethnic Ukrainians decreased from 3.1 % to 2.1 % , and the proportion of ethnic Belarusians decreased from 1.8 % to 1.2 % .
 None
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:  
Answer:
 None