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 really need the water more than the rest of that stuff. I'll take 2 waters, 1 food, and 1 firewood. ' 'We close the deal if I drink 1 water, 2 meals, and 3 firewood' 'Give me just 1 firewood, and we'll have a deal'
Utterance: 'We have a deal'
[A]: No


[Q]: Context: 'I need more food since I have a huge family. Can you give me all food i give you all water?' 'i need a little more food because i forgot that we where staying longer and i forgot some of my food. Can i give you 1 food package please? '
Utterance: 'Food is what I need most. I can not survive with less than 2 food'
[A]: Yes


[Q]: Context: 'Its good! I am looking forward to the activites i'll be doing, such as campfires.' 'Hey, that's great. Good to hear definitely. I am also looking forward to build some campfires and enjoy some s'mores!' 'Thats great! Would it be okay if I got 2 packages of firewood, and 1 each of the food and water?'
Utterance: 'I would've like to have 2 packages of firewood instead. How about I give you all the extra water packages?'
[A]:
No