MegaHAL is a computer conversation simulator, or "chatterbot", created by Jason Hutchens.
In 1996, Jason Hutchens entered the Loebner Prize Contest with HeX, a chatterbot based on ELIZA.
However, its popularity has grown due to its humorous nature; it has been known to respond with twisted or nonsensical statements that are often amusing.
It's Superman - he can change the course of mighty rivers, bend steel with his bare hands - and who disguised at Clark Kent …" IT MIGHT induce Megahal to apparently bemuse itself to proffer whether Superman can change the course of human events, or something else altogether - such as some rambling about "when in the course of mighty rivers", and so on.
Thus likewise - if a phrase like "the White house said" comes up a lot in some text; then Megahal's ability to switch randomly between different contexts which otherwise share some similarity can result at times in some surprising lucidity, or else it might otherwise seem quite bizarre.