claim: A polynomial only consists of set values.
evidence: Stepan Maximovich Petrichenko -LRB- Степан Максимович Петриченко 1892 -- June 2 , 1947 -RRB- was a Russian revolutionary , an anarcho-syndicalist politician , the head of the Soviet Republic of Soldiers and Fortress-Builders of Nargen and in 1921 , de facto leader of the Kronstadt Commune , and the leader of the revolutionary committee which led the Kronstadt rebellion of 1921 .. Russian. Russians. Soviet Republic of Soldiers and Fortress-Builders of Nargen. Soviet Republic of Soldiers and Fortress-Builders of Nargen. revolutionary. revolutionary. anarcho-syndicalist. Anarcho-syndicalism. Kronstadt Commune. Kronstadt Commune. Kronstadt rebellion. Kronstadt rebellion