!addcom when $(eval
var a = ["Tomorrow", "Now... Before you forget", "ANY_OTHER_ANSWERS"];
var b = a[Math.floor(Math.random() * a.length)];
var q = "$(query)";
if (q === "") {
(" ");
} else {
(b);})
It’s probably a bit sloppy, but I think this is more or less what you were looking for. In my version the bot will give no reply if someone only says “when” with nothing after it, however you can change that if you wish. Also obviously replace ANY_OTHER_ANSWERS with any other possible responses you’d like the bot to give, following the same format as the previous ones.