Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i would like one of each. YOU: gimme hat THEM: i will agree to you having all the books. YOU: hat for me, you take all rest THEM: nope, i can't agree to that, i need one of each. YOU: no deal? THEM: guess it's a no deal. YOU: waitin for button THEM: still don't have the no deal button on this side either, final offer one each of the book, hat and ball to me. YOU: hmmmmm nope.
Output:
No