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.

[Q]: Context: 'I was hoping for a decent amount of food, just in case my new recipes don't work out, lol. 🙂' 'Haha, makes sense. I'm also interested in food. What if I take 2 waters and 1 food, and you take 1 water and 2 food?' 'I would be okay with that if I could also have all of the firewood. It seems fair since you will be getting the most water. Would that work for you?'
Utterance: 'That seems like a lot to compensate for just 1 water. How about I also get 1 firewood?'
[A]: Yes


[Q]: Context: 'Ok thats fair, I would prefer to have more firewood since I'm awful at collecting firewood while out. But we could be a more even split of it all. 2/1 for both. Do you need more water or more firewood?' 'I need more firewood, I can maage with 1 additional package of water.' 'ok, so I'd get 1 firewood, 2 water. Now for food, If we continue with an even split I'd much prefer getting 2 extra food. that would bring us up to a near even split overall '
Utterance: 'Ok. I get it and that would be fair as I already have enough food.'
[A]: Yes


[Q]: Context: 'Thank you, it would have been difficult for me to get more firewood and I appreciate the additional water. So I get 3 firewood, 2 water and 0 food.' 'Yes, I think that deal will be the most helpful to both of us. I appreciate the food, which is important to me.' 'You are welcome. Thank you for being so understanding, the extra packages are really going to come in handy for me!🙂'
Utterance: 'Perfect, I will submit the deal after just a few more messages. You were great to work with!'
[A]:
No