The input is taken from a negotiation between two participants who take the role of campsite neighbors and negotiate for Food, Water, and Firewood packages, based on their individual preferences and requirements. Given an utterance and recent dialogue context containing past 3 utterances (wherever available), output Yes if the utterance contains the vouch-fair strategy, otherwise output No. vouch-fair is a selfish negotiation strategy. It is used to call out fairness for personal benefit, either when acknowledging a fair deal or when the opponent offers a deal that benefits them. This can be through an explicit call out or can be implied.

[Q]: Context: 'My favorite thing to do is sing songs and tell stories around a campfire.  Consequently, I was really hoping to get some additional packages of firewood. 🙂' 'I do love sing alongs around the campfire. I usually go hiking and it requires a lot of energy and fuel. Maybe I can get additional food packages?' 'You'll definitely need some additional calories if you want to do extra hiking.  I will give you all the additional food if you give me all the additional firewood. '
Utterance: 'Sounds like a deal, maybe split the water packages evenly. Can't be dehyradated while camping 🙂'
[A]: Yes


[Q]: Context: 'Hmm, I think I would prefer your original offer instead.  You can have all the food if I can have all the rest.' 'Hmmm i don't beleive i ever offered you everything for all the food. I will need at least one water. lets not be selfish.' 'Oh you are right sorry, I was mistaken.  Okay then, how about I get 1 food, 2 waters, and 3 firewood.  You can have 2 food and 1 water?'
Utterance: 'Well that would give you 6 rations and me 3. Again that is not very fair. If you want 1 food and all the fire wood that i need at least 2 waters. so again, 1 food, 1 water 3 wood for you'
[A]: Yes


[Q]: Context: 'I see. Which resource do you desire most?' 'Well I was thinking you could get all the extra firewood and work on the group meal and bonfire for friday night' 'I like the sound of getting the firewood, but I can't just accept no food or water.'
Utterance: 'I'll give you one of the extra food so you have a little extra to cook for everyone but I'm really gonna need all that extra water, it's going to be really hot this weekend and the folks at the capsite get to sit in the shade all day'
[A]:
No


