A twelve-foot barbarian stands before you, wielding a sword in his left hand, and brandishing an axe in his left.
He says, "Tell me something I would know, and I may spear your life. If what you say I know to be a lie, I'll kill you with my axe. However if what you say I know is true I'll kill you with my sword".
How can you live through such a predicament?
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