instruction: Answers from users whose first answer is in 2015.
response: SELECT q.Id AS "post_link", a.Id AS "answer_link", a.Score AS "votes", u.CreationDate AS "user_arrival", q.Tags AS "tags" FROM Posts AS a JOIN Users AS u ON a.OwnerUserId = u.Id JOIN Posts AS q ON q.Id = a.ParentId WHERE u.CreationDate >= STR_TO_TIME('1 JAN 2015', '%d %b %Y') AND u.CreationDate < STR_TO_TIME('1 JAN 2016', '%d %b %Y') AND a.Score >= @votes AND (@tag = '' OR q.Tags LIKE '%<' + @tag + '>%') ORDER BY u.CreationDate