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: 'I have a medical condition that causes my veins to close up when I get too cold. I will thus need the 3 firewood.' '☹️Oh, that sounds awful. Are you sure you need all three packages of firewood?' 'I might be able to get by with just two... I'm on a diet though, so I don't need as much food.'
Utterance: 'That's a relief. I actually have a friend joining me and they don't have their own food supply. I don't have enough for two people.'
[EX A]: No

[EX Q]: Context: 'hello there my fellow camping friend' 'Hi! I'm most interested in acquiring firewood, since I don't want my fire to burn out on the trip. What are you looking for?' 'I am also looking for firewood. Since I was a child i have always enjoyed camp fires. They mean a lot to me'
Utterance: 'Okay so we can think about splitting the firewood. 🙂 I'm also interested in water because I plan to do a lot of activities like hiking and kayaking, so it will be helpful for me to be able to hydrate more.'
[EX A]: No

[EX Q]: Context: 'i am not able to do that unfortunately i desperately need firewood. ' 'Perhaps I wasn't clear, so if I take 2 firewood, you take 1; I would just need some help with some of the food. Is that reasonable?' 'i guues'
Utterance: 'So let's make sure this is reasonable; Firewood - 2 for me, 1 for you; Water 2 for you, 1 for me, and you can have all of the water?'
[EX A]:
Yes