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: 'I do have a little hike planned, so the water comes in handy. I am more excited to relax and fish' 'Well I want to go run the trail, but like to check it out first. Perhaps we could walk one together. perhaps in a couple moments we could fix the supply situation .' 'Yeah, that would be fun. '
Utterance: 'Well, why dont you propose how to divvy up the packages and we can get on with out camping?'
No

Context: 'Thats great! Would it be okay if I got 2 packages of firewood, and 1 each of the food and water?' 'I would've like to have 2 packages of firewood instead. How about I give you all the extra water packages?' 'Well for a compromise I will give you the 2 packages of firewood, if I got 1 firewood, 2 food, and 3 waters. 🙂'
Utterance: 'Great, that sounds fair to me. '
Yes

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.'
No