Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Q: THEM: you can have all the hats if i get the book and the balls.  YOU: no deal. i can do the book and all the hats or 2 balls and 2 hats.  THEM: i can give you the book and all the hats if i keep the balls.  YOU: deal.
A: 
Yes