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: 'you can make water by boiling water with all that extra firewood you got' 'you said I could have some firewood' 'Let me take 2 firewood, 2 water and you take the rest. You will have more than me overall'
Utterance: 'ok'
[A]: No


[Q]: Context: 'You can find more wood in the forest but I'm going somewhere where there's not a loot of trees ☹️' 'That makes sense. What if you took 2 firewood in exchange for 1 additional food?' 'you can have 3 food'
Utterance: 'Alright🙂 From what I understand, that means that you would take 3 firewood, and I would take 3 water and 3 food. Is this your understanding as well?'
[A]: No


[Q]: Context: 'I am worried about water but also could use a little more food, just in case. I am looking forward to a nice campfire as well!' 'I know! Camping's so much fun! Where do you plan to be going?' 'We will be camping up north, nothing around for miles!'
Utterance: 'Ooh, that sounds like you're really roughing it! What kind of activities do you plan to do? I'm planning to really tire my kid out and do a lot of hiking. My husband's also excited to practice "survival skills" and wants to do a lot of fishing and foraging too.'
[A]:
No