Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i'd like 2 balls and 1 hat please.  YOU: i will let you have the balls and the books if i can have the hat  THEM: deal. i'm taking 2 balls and 1 books.  YOU: wait, on the books - do you want one or both?  THEM: sorry, i meant 2 books  YOU: ok, deal!  THEM: thanks!
Output:
Yes