Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Q: THEM: take the books, they're useless. i need two hats.  YOU: how about you take one hat and the basketball  THEM: oh, hmm. that works.  YOU: great, so books for me and 1 hat. hat and basketball for you?
A: 
Yes