Go ahead and list yours and other people can guess from any or all of us. Guessing stays open until you give your reply. How long you wait to reveal the answer to yours is up to you. (I'll wait at least until someone guesses at my answer on the other forum, or sometime in the next day or two if nobody else replies there.) Once you have revealed which one is a lie, then you can give a new set of "facts."

-Eric