Input (grade 6): He learned and became fluent in Ukrainian and remarried (with Svitlana Ivanivna Shcherbatiuk aka Svetlana Sherbatiuk aka Svetlana Parajanov) in 1956. Shcherbatiuk gave him a son (Suren, 1958).
Output (grade 8): He became fluent in Ukrainian, remarried (Svetlana Ivanovna Sherbatiuk in 1956) and had a son (Suren, 1958).