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.

Input: Consider Input: Context: 'That would be great! I don't need food as much as I am in need of firewood, to be honest.' 'I brought purification tablets so I can make do with rainwater or river water.  How about you?' 'That's very smart! 🙂 Way to be prepared! I didn't think to do that.'
Utterance: 'So if we were to split the firewood more in your favor and I were to take all the food, and then we kind of split the water, I think we could maybe make a deal here?  🙂'

Output: Yes


Input: Consider Input: Context: 'Getting there, just need some more supplies to be safe.' 'Got you! I really need firewood to make smores and I don't think we have enough to last the whole night!' 'I was hoping to pick up a lot of wood. It has rained around here and the wood is soggy in the forest.'
Utterance: 'Which item do you prefer the most?'

Output: No


Input: Consider Input: Context: 'ok what do you have in mind?' 'Well if I gave you a majority of the water, I would like 1 water, 3 firewood and 1 food.' 'so I would have 2 water, 2 food and 1 firewood? My kids were looking forward to making s'mores. If I could get 2 water, 2 firewood and one food, that would be great!'
Utterance: 'You would get 2 water and 2 food, I would get 1 water and 1 food for hiking and 3 firewood for having to stay out longer in the dark to complete my hiking goals.'


Output: No