Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: hello there. i'd like to keep the books and the hat - you keep the basketballs? YOU: that won't work for me, i also need at least 1 book THEM: the balls are of no value to me so there's no use fighting for them... i'll accept your offer. i'll take 1 hat, 1 book ; you get the rest. YOU: ok, deal!
Output:
Yes