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The beginning of a systematic work of organs of VCheKa in RKKA refers to July 1918 , the period of extreme tension of the civil war and class struggle in the country .
 organization: VCheKa; organization: RKKA
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: VCheKa, RKKA 
Answer:
 organization: VCheKa; organization: RKKA