TASK DEFINITION: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
PROBLEM: THEM: hey there! how do you feel about letting me take the book and the balls in exchange for the hats to you?  YOU: i don't really want to give up the book  THEM: unfortunately that's the only thing of value i have. so i can't really part with it.  YOU: so there is absolutley nothing else of value other than the book???  THEM: the balls have minimal value ; i'd be willing to give you 2 balls, 2 hats for 1 book, 1 ball?  YOU: i will take the 2 hats and 2 balls thanks.

SOLUTION: Yes

PROBLEM: THEM: can i take the balls and the hats?  YOU: just hats  THEM: sorry, can`t do that. really need them  YOU: just hats and one ball then  THEM: 2 balls and one hat. i won`t go any low  YOU: how about two hats one ball  THEM: no deal, that does not work for me. want the 2 balls and one hat. this is as low as i go  YOU: yeah no deal  THEM: no deal then, sorry  YOU: no deal.

SOLUTION: No

PROBLEM: THEM: hey i like the hats and the balls, couldn't dream of parting with any  YOU: how about i take the book, one hat and one ball?  THEM: i want both balls and a hat  YOU: no deal, you can have the two balls if you want. and i`ll take the book and two hats  THEM: no deal  YOU: 2 balls and the book. and i`ll take 2 hats  THEM: i dont want this book  YOU: then give me the book and 2 hats, and you can have the 2 balls  THEM: i want both hats and a ball  YOU: it`s not worth, just let me have them and we can move on. one book and 2 hats, or one of each (you said you don`t want the book)

SOLUTION:
No

