Instructions: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i'd like two of the books and 1 ball and you can keep the rest  YOU: i can't do that. i want the hat, and two balls, you can have both books.  THEM: if i can get at least one ball we have a deal  YOU: fine, deal. you get both books and one ball.
Output:
Yes