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.
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Question: Context: 'Yes I think that sounds fair.' 'So if I take 2 foods and 1 firewood, you take 1 food and 2 firewood. What would be fair for water?' 'What if I take two waters and you take one water then?'
Utterance: 'I think that sounds fair, since you compromised on food. Sounds like a deal!'

Answer: Yes


Question: Context: 'I like to eat.  I think extra food is good.  Are you willing to let me have all three food packs? 🙂' 'I would want to keep at least one packet of food for myself, unless you want to just swap 3 firewoods for 3 packets of food, to keep it simple?' 'I like your plan.  It is simple. I will agree to that.'
Utterance: 'So all that is left is water, i guess i should atleast drink alot of it if i wont eat much haha 🙂'

Answer: No


Question: Context: 'we are cold and hungry so we need firewood and food the most, what about you?' 'I don't care about the firewood, but I would like food and water the most.' 'you can take water if i get all the firewood and some food'
Utterance: 'I'll take all the water, you can take all the firewood. What would be fair for the food?'

Answer:
Yes