Conversation so far:
What was unique about Girl Generations lyrics or themes?
Although most Girls' Generation's releases are written by songwriters for S.M.
Entertainment, some members occasionally participated in songwriting.
Who was some of the girls who did the songwriting?
Member Yuri wrote the lyrics for "Mistake.

Question: What year was the song Mistake released?
Self-contained rewrite: What year was the song Mistake released?