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: 'Hi, I would like all of the water and 2 food packages. You can have all of the firewood and one food package. Does that sound good?'
Utterance: 'Nice to meet you! I definitely like the idea of having all of the firewood, but water is very important to me. Let's see if we can come to and agreement on how to split up the water.'
[EX A]: Yes

[EX Q]: Context: 'Thats what I wanted, but wait , I just remember that I have to stay a bit longer at the camp . why don't you let me have 3 on food, 2 on firewood and you van have all the water and ' 'ok, your being greedy but lets make the deal' 'hahahah not too greedy, but yes we can make a deal🙂'
Utterance: 'you gave me one on each, thats unfair man!'
[EX A]: Yes

[EX Q]: Context: '2 food , 1 firewood ,2 water for me is it ok?' 'not fair at all☹️' 'then what will do, '
Utterance: 'if you take two food, then I take all the wood and two two water and one food'
[EX A]:
No