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?
{'answer': '1955', 'supporting_facts': [['Yunost', 0], ['Valentin Kataev', 0]]}