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 both books  YOU: okay.
Example Output: Yes

Example Input: THEM: i need only two books and you can keep everything else  YOU: okay sounds fair.
Example Output: Yes

Example Input: THEM: i'd like the two books, you can have the rest.  YOU: ok.
Example Output:
No

