Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i'll take two balls. you can have the rest.  YOU: no deal. i'll take one ball and two books.  THEM: i have to have both books or no deal.  YOU: no i can't  THEM: i meant balls sorry. both balls.  YOU: i need at least one of the balls  THEM: okay. no deal till the button i guess.  YOU: ok  THEM: no deal.  YOU: no deal.
Output:
No