Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: the book and the hat are what i desire. i cede the balls YOU: sorry that wont work for me. i need the book and hat too THEM: i really must insist n the book but i can give the hat if it yields me two balls YOU: ok, i can do that. ill give you the book and 2 balls THEM: we have a deal.
Output:
Yes