This is the revision history for xkcd in <freenode.net:#regex>

factoid_idsubjectcopulapredicateauthornamespace
15804 xkcd is <fact humor>
https://xkcd.com/208/, https://xkcd.com/1171/
digitok
15104 xkcd is <fact humour>
https://xkcd.com/208/, https://xkcd.com/1171/
digitok
13420 xkcd is https://xkcd.com/208/ ouims