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: 'We can try to figure out a way to split the water and food in the fairest way 🙂. Firewood isn't an issue so it doesn't matter as much. I think to start something like splitting the food 2/1 and the water 1/2?' 'That might work. I can always boil it and I could use the extra food for the kids.' 'Ok so I propose 2 water for me, 1 for you. 2 food for you, 1 for me. Firewood would be, 2 for you, 1 for me? Please give me your opinion if you want to reverse any of that.'
Utterance: 'That would work, the extra firewood would offset the need to have water on hand when I can boil it.'

No