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: 'Sure, my number one item if food if you can spare any.' 'It'd be nice if we can both get an even split right?' 'Well some needs are higher than others.  I need more food but I can give up some firewood or water.'
Utterance: 'I think we can start off with 3 water for me and 3 food for you'
[EX A]: No

[EX Q]: Context: 'hy thats my offer' 'Hi there.. I'm sorry, I didn't see your offer as it doesn't show it for 10 messages, I believe.  So, here's the situation.. I think I can get by with less firewood as I'm a Floridian and prefer it cooler anyway.. also the food is not a huge thing for me as we can catch / improvise around the campsite - but I'm definitely interested in as much water as possible.. both for cooking and cleaning purposes, as well as drinking, of course.  🙂' 'okay so what do you suggest'
Utterance: 'Well, I recognize you're gonna need water too.. so I'd love to take 2 of them, giving you one and I'm totally ok with going 1 on the firewood and one on the food.. that way we all ensure we have enough.. you're making out a bit better in quantity that way but I think its best for both of us 🙂'
[EX A]: Yes

[EX Q]: Context: 'Kindly understand our need as we are struggling with hunger now.' 'At the same from my side. We need foods because my child is hunger' 'We with our kids undergone fasting in the recent days, so we are hungry to the peak'
Utterance: 'What did you expect from me? Because same position is here also'
[EX A]:
No