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: 'Hello I would like to have more water then what I got because I drink a lot' 'Hi, nice getting to interact with you. It is fine if I give one of it, as that is something that I need the most as well.' 'I can give you 2 packages of food or firewood instead'
Utterance: 'Hmm. I'm not able to compromise on this, I'm fine with 1 package of firewood and food each.'

Answer: Yes


Question: Context: 'well I am sure between you and me we will find a way....' 'I really need some food, but I could also use extra firewood. It is supposed to be pretty cold at night and we would love to cook up some smores.' 'I hear you we have the same issues well you can have either 2 food or 2 firewood what would you prefer?'
Utterance: 'I would prefer 2 food. I could give you 1 food, 2 firewood and 2 water?'

Answer: No


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