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: 'Yes, can you live with two foods? ' 'I can. How about firewood? I would like 2 if possible.' 'Well there are only 3.'
Utterance: 'Of course. Since you're getting more water, I was hoping to get 2 firewood, and you could have the remaining 1. Would that work for you?'
[EX A]: Yes

[EX Q]: Context: 'Okay, maybe wwe can split the food and water somehow. I don't know how.🙂' 'Can i have 2 firewood, 2 food and 1 water' 'That can work. That seems like a good solution to the problem.🙂'
Utterance: 'Ok I hope you are okay with that. Please confirm!'
[EX A]: No

[EX Q]: Context: 'no what about this, I get 3 firewood then rest is yours' 'I think can highly consider it, why do you prefer the firewood? ' 'for me, firewood is more useful '
Utterance: 'I see. What do things would you use the firewood for?'
[EX A]:
No