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: 'yes i can agree to that, thats a good compromise' 'yay, thank you so much! to very I am getting 3 waters, 0 firewood, and 1 food?' 'i will be getting 3 firewood, 0 water and 2 food'
Utterance: 'perfect! submitting deal, thank you so much for understanding'
No

Context: 'Hey, I think that this is nice, we get to go camping and get extra stuff. But definitely need more food and firewood' 'Yeah, I think I'm okay with firewood, but I'd really like more food and water.' 'That fine then. If you want you can have most of the water and I can have most of the firewood. Sounds good?'
Utterance: 'That seems fine. How do you want to split the food? I grew up poor so I'm always afraid of starving 😮'
Yes

Context: 'Hello, I am very cold and need food and wood to remain warm. How about I get 3 firewood, 3 food and 1 water?'
Utterance: 'That doesn't really work for me because then I would get only 2 waters and nothing else ☹️. What do you think is your highest priority?'

Yes