Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i would like the hat and the ball  YOU: unfortunately, that will not work for me. i would like the ball and two books and you can have the hat and two books if that works for you  THEM: perfect, i'll take the hat and 2 books  YOU: great! thank you!
Output:
Yes