Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: hello, i would like the books and the hat YOU: that won't work i need the books and you can have the rest THEM: i can't make that deal, balls aren't worth much to me. i'll need at least 1 book. YOU: then i need two books and both balls THEM: that won't work either. how about you get 2 books and 1 ball, i get 1 book, the hat, and 1 ball? YOU: sounds good.
Output:
Yes