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

Example Input: THEM: i want the ball and two books YOU: would you accept taking all the books instead? THEM: hmm, really wan that ball YOU: ok, would you give me the ball and take everything else? don't think i can do anything else. THEM: yes.
Example Output: Yes

Example Input: THEM: i really need a ball but i could use a hat YOU: i need a ball, too! but you can have it, if you give me the rest THEM: sorry i have to have the ball. YOU: i'll give you the ball if you give me the rest THEM: that's fair.
Example Output: Yes

Example Input: THEM: hello i want the ball and a hat please. YOU: ok deal THEM: you can take the 2 books and the other hat.
Example Output:
Yes