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 have an idea. I could give you 3 firewood and you give me 3 water and 3 food. ' 'That would be great but I could find myself in need of some extra water. Don't want t get dehydrated from all the dancing! Could I trade you one of the firewood for 2 of the water?' 'I see. How about you get 2 firewood 1 water 1 food. And I get 1 firewod 2 water 2 food?'
Utterance: 'I think that sounds fair. So I would get 2 firewood, 1 water and 1 food. You could get 1 firewood, 2 water, 2 food. Is that correct?'
[EX A]: Yes

[EX Q]: Context: 'Hello.  How are you?' 'not too bad, looking forward to a good camping trip 🙂' 'Yes!  This camping trip is going to be great!  I hope to make it very memorable.'
Utterance: 'indeed.  anyways, I would like to divide the extra supplies equitably'
[EX A]: Yes

[EX Q]: Context: 'That makes sense. What if you took 2 firewood in exchange for 1 additional food?' 'you can have 3 food' '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?'
Utterance: 'Can we split the water? You can have 2'
[EX A]:
Yes