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.

[EX Q]: Context: 'i could give you 2 water bottles and 3 food if you can do 3 firewood' 'OK. Are you need Extra food packages?' 'no, I am okay with food which is why I offered them all to you since all my firewood is ruined. I figured if i gave you 2 water and 3 food you might be able to spare the 3 firewood'
Utterance: 'No I cant give you all the firewood. I will take atleast one firewood. Also can I have all three water bottles. '
[EX A]: Yes

[EX Q]: Context: 'I would really appreciate if I am able to take 2 of the food packages since I am a vegan and its hard to find options in the woods and if i can have 2 or 3 of the waters because i have a baby coming with me and i need it for his formula! ' 'I think I can help with that, but in exchange, can I have 3 firewood bundles? I hate to take from the forest and risk damaging the natural wildlife habitat.' 'yes of course!'
Utterance: 'great!'
[EX A]: No

[EX Q]: Context: 'okay friend you can have 3 firewood and 3 water is that good enough?' 'I am going to need some food of course. ' 'yes ofcourse i agree with you.my dear friend will you have 1 food 3 firewood and 3 water'
Utterance: 'I would prefer 2 food and less firewood. There is tons of firewood where I am but there is no lake so I can't fish. No berries around here either. It's pretty scarce'
[EX A]:
No