Sentence:  Kratochvil, Jedlicka, Safar, Kubes and Vasata, who always took an interest in politics, set up a <WSD>soviet</WSD> in the last wagon and uncoupled it from the rest of the train in the night. 
Meaning of the word marked with <WSD> tags:  A form of governing council in the former Soviet Union and similar organizations in early Chinese communism.