Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i'll give you two balls for everything YOU: balls are 4 points for me. no deal. THEM: i'll give you two balls and a hat for two books YOU: i just want the balls. THEM: two balls for two books then YOU: i just want the balls. you can have everything else.
Output:
Yes