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

[EX Q]: THEM: how about i give you all four hats for a basketball?  YOU: as long as i can keep the book.  THEM: sounds good.
[EX A]: Yes

[EX Q]: THEM: i would like the hat at least. i can work with the rest  YOU: ok, i'll take the ball and two books  THEM: ok that is good.
[EX A]: Yes

[EX Q]: THEM: i really need both books. you could take all the rest.  YOU: i trade you a ball for a book  THEM: balls have no value for me, so you should take them all. only the books are valuable.  YOU: ok deal.
[EX A]:
Yes

