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 would say between firewood and food, eating and comfort is important to me' 'I can understand that. I know I really need the food the most. I'm already worried I'm going to run out. I also have blood sugar problems, so I cannot run out ☹️' 'Thats fine. If you want you can have 2 foods and I get 2 of the fire wood. Sounds fair?'
Utterance: 'And I would take 3 water? '
[A]: No


[Q]: Context: 'I have enough food too. Can I take 2 water, 1 firewood and 2 food?' 'How about two water, 1 firewood and 1 food, since we both value water the most?' 'Is that what you want or what you are offering?'
Utterance: 'That's what I'm offering to you, but I think it's a fair deal, so I'd accept it myself, too.'
[A]: Yes


[Q]: Context: 'Would you be willing to give me 1 food, 2 firewood, and 2 water?' 'I could make that work 🙂 I'm sorry if I came off mean, I'm just trying to make sure I'll be ok. I don't camp often, so I'm not sure how to prepare.' 'I understand. What are you using the extra food for?'
Utterance: 'I brought some pre-packed snacks, and a few sandwiches. I'm hoping there are no hungry animals around. What about you?'
[A]:
No