One of the old closed Machine Learning proposals doesn't appear to have a data dump available. If that data still exists, could it be published please?
I am trying to recall if was a time when it might not have made it into a data dump because there were so few questions (15 days averaging 1 question/day); but honestly, I cannot recall. Unfortunately, there is no database dump and after almost 6 years, the original site is long gone. I wish I had better news for you.