You will be given a definition of a task first, then some input of the task.
Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.

THEM: i'd like the book and the rest is negotiable.  YOU: i'd also kind of like the book, but can give it up if i can take the rest.  THEM: hmm... i suppose we can do that. deal.
Output:
Yes