Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: gimme all balls  YOU: i need at least 1 ball to go with my 1 hat and 1 book  THEM: a bit costly to me  YOU: okay, i can work with 1 book and 1 hat. deal?  THEM: ok.
Output:
Yes