Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.

Q: THEM: hello, i need to obtain the hat and am willing to give you the books and balls in return. YOU: yucky deal, but i suppose its fair enough.. deal.

A: Yes
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Q: THEM: i would like the balls and the hats YOU: you can have the balls or the hats, i can not do both THEM: how about the balls and 1 hat YOU: no i can not do that. its already going to be a stretch if i give you one or the other. THEM: i can take just the balls YOU: is the a deal then?

A: Yes
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Q: THEM: i'l take the book, a hat, and a ball YOU: i cannot give up the book. i would need a book and a hat THEM: how about a book and a ball? YOU: deal.

A:
Yes
****