Definition: 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: Context: 'So do I. I'm trying to bulk up because I've been skinny all my life. ☹️ Let me just get one please☹️☹️☹️☹️☹️☹️' 'well we do not want to be unreasonable. How about we take 2 food, 2 water then just in case they can be satisfied with the extra water. In that case you get 1 food, 1 water and all firewood. ' 'That is not too fair neither of us need firewood. It would be most fair if you got two of your biggest need and I got two of the others. '
Utterance: 'so you do not need the firewood at all? in that case i can take 2 food, 1 water and 2 firewood. You can take 1 food,2 waters and 1 firewood. '

No