Question: Yunost, is a Russian language literary magazine created in which year, in Moscow (initially as a USSR Union of Writers' organ) by Valentin Kataev, was a Russian and Soviet novelist and playwright who managed to create penetrating works discussing post-revolutionary social conditions without running afoul of the demands of official Soviet style?
Sentence (from "Valentin Kataev"): Valentin Petrovich Kataev (Russian: Валентин Петрович Катаев ; also spelled Katayev or Kataiev; 28 January [O.S. 16 January] 1897  – 12 April 1986) was a Russian and Soviet novelist and playwright who managed to create penetrating works discussing post-revolutionary social conditions without running afoul of the demands of official Soviet style.
Relevant evidence: Yes