Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i want the book and three hats YOU: yeah no book* THEM: then everything else for me YOU: i need one ball please THEM: everything else for me if you take the book YOU: ok two hats THEM: everything else to me if you want the book YOU: fine.
Output:
Yes