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.

[EX Q]: Context: 'Ok I'm sure we can work it out because I know I need extra water and firewood. Do you have any ideas on how to divvy up the extra supplies?' 'I would need some firewood as well, as I need it to cook the food. I was thinking maybe you can have all the water and I have all the food.' 'All the food is too much, I would need at least one package of the food for my group. I was thinking you could have 2 of the food packages and I have 1, then I get all the water and the majority of the firewood. That leaves you with 2 of the high priority food packages and a package of firewood to cook the food.'
Utterance: 'That seems quite unfair. I really would like my camping trip to be enjoyable.'
[EX A]: Yes

[EX Q]: 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.'
[EX A]: No

[EX Q]: Context: 'As I have explained now twice, it is obviously food.' 'k, then 2 is for u 1 for me but i need remaining two as per my priority' 'What does that mean?'
Utterance: 'means water and firewood  i need majority then only it will balence'
[EX A]:
Yes