Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i get the ball and hats you get the books YOU: you can have the balls but, i need the hat and the books THEM: you get hat and 1 book, i get the rest YOU: would you be willing to give up one ball as well? THEM: what do you need YOU: i need one book, the hat, and one ball for me to get a decent deal. THEM: no deal YOU: okay. no deal. THEM: to book and hat for you i get two balls YOU: okay deal!
Output:
Yes