TASK DEFINITION: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
PROBLEM: THEM: both balls and a book to me YOU: you can have all the books and the hats if i canhave the balls. i need two balls... i'm a eunech THEM: one each for each person.

SOLUTION: No

PROBLEM: THEM: hi, can i have the book and 2 balls? YOU: you can have the book and 1 ball THEM: ok deal.

SOLUTION: Yes

PROBLEM: THEM: gimme the books YOU: how about you take one book and the ball instead? THEM: ok.

SOLUTION:
Yes