Teacher:Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Teacher: Now, understand the problem? Solve this instance: THEM: how many of those balls are you going to give me?  YOU: i can give you 2 if you give me 1 book, 1 hat and 2 balls?  THEM: deal  YOU: great, thanks!
Student:
Yes