A man has been sentenced to death. The morning of his execution, the executioner tells the condemned man he is to be either hanged or drowned, and tells the man to ask him one yes or no question, which he is compelled to answer truthfully. If the answer to the question is "yes", then the man will be hanged. If the answer is "no", then the man will be drowned. The man asks "Are you going to drown me?" Will the man be hanged, or will be he drowned?