Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.

Input: Consider Input: THEM: i would only like the book  YOU: i can not give up the book. would you be willing to make another deal?  THEM: well, how about that then  YOU: would you be willing to give up the book at all?

Output: No


Input: Consider Input: THEM: i need the ball and two hats.  YOU: that's fine, i'll take the book and one hat then?  THEM: great.

Output: Yes


Input: Consider Input: THEM: i want the hat and a book.  YOU: sorry that wont work for me. i would like the hat and balls  THEM: would you give up the hat to have everything else?  YOU: no, sorry.  THEM: okay, i'll just take the books.  YOU: ok, deal.


Output: Yes


