Unfortunately, it looks the page titles were written incorrectly in the
'responses' csv files, with non-ASCII characters are written as ?. This is
making it impossible to examine anything other than enwiki.
Thanks for notifying us of this issue. I've uploaded a fixed dataset (the
responses.zip part) -- the order and any other detail should be the same
(except that titles should now be fixed). Let me know if you find any other
issues with the data.