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.

Context: 'Well I am happy to give you all my food in exchange for all your water.' 'We can do that! How do you want to split up the firewood?' 'It's an odd number so someone has to get 2. But in order to make it fair if one of us takes two then the other should get one of the lower priority items. What do you think?'
Utterance: 'That sounds fair to me! I am good either way.'
Yes

Context: 'At the same from my side. We need foods because my child is hunger' 'We with our kids undergone fasting in the recent days, so we are hungry to the peak' 'What did you expect from me? Because same position is here also'
Utterance: 'I would like to share water with you as we already have it in some quantity'
No

Context: 'Water is important!! To me firewood is more important as I have anemia and I'm ALWAYS cold lol' 'Alright. I have a  feeling we will have a deal then. How about you give me two water for a firewood?' 'that sounds like a plan'
Utterance: 'how many firewood you need? Maybe we could also exchange one food for one more firewood?'

No