This is the revision history for explain in <freenode.net:#perlbot>

factoid_idsubjectcopulapredicateauthornamespace
11555 explain is <echo>
rewt <*:##NULL>
11554 explain is <echo>
Not Available
rewt <*:##NULL>
11553 explain is another bot that's not here rewt <*:##NULL>
11491 explain is <echo>
Not Available
simcop2387 <*:##NULL>
11490 explain is <>
Not Available
simcop2387 <*:##NULL>