Instructions: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i can offer you one book  YOU: i will need both books or one book and other things.  THEM: i can offer you both books if i get everything else  YOU: how about i get both books and one ball or one hat?  THEM: no i can only offer you both books or we cant make a deal  YOU: ok, i agree then.
Output:
Yes