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

[EX Q]: THEM: i'd like ball. you can have the rest.  YOU: i'd like the ball and you can have the rest!  THEM: ball is 10 for me. that's the only deal i can do.  YOU: ok, it's 10 for me, too, bummer  THEM: no deal till button.  YOU: ok,  THEM: no deal  YOU: nope, but it's an impossible situation for us both  THEM: nada  YOU: nope.
[EX A]: No

[EX Q]: THEM: i'll take a book and a ball and you can have the rest if that works for you  YOU: deal.
[EX A]: Yes

[EX Q]: THEM: i'd like the book and the hat you can keep all 4 balls.  YOU: deal.
[EX A]:
No

