Conversation so far:
Where was Aleksandr Solzhenitsyn born?
Aleksandr Solzhenitsyn was born in Kislovodsk, RSFSR (now in Stavropol Krai, Russia).
What year was Aleksandr Solzhenitsyn born?
Aleksandr Solzhenitsyn was born 11 December 1918.

Question: What did his parents do?
Self-contained rewrite: What did Aleksandr Solzhenitsyn's parents do?