TASK DEFINITION: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
PROBLEM: THEM: i want the hat and 2 books  YOU: i can't agree to that deal. i'll take the ball, but i'm going to need one of the books as well.  THEM: so you get the ball and 1 book?  YOU: if that seems to you.  THEM: deal.

SOLUTION: Yes

PROBLEM: THEM: can i have the books and the balls please?  YOU: can i have the hats and we split the balls?  THEM: no, i have to have both balls if it has to make sense  YOU: are you sure?  THEM: yes  YOU: ok, i'll take the hats  THEM: deal.

SOLUTION: Yes

PROBLEM: THEM: gimme the balls  YOU: ok, if i can get the book and the hats.  THEM: ok.

SOLUTION:
Yes

