Question: Which faction of the Marxist Russian Social Democratic Labour Party did Nikolai Krivoruchko join?
Sentence (from "Nikolai Krivoruchko"): Nikolai Nikolayevich Krivoruchko (Russian, Николай Николаевич Криворучко, December 6, 1887 – August 19, 1938) was a Soviet Komkor (corps commander).
Relevant evidence: No