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: 'okay friend. In my team old age sicked peoples and kids are there so i need some extra package.' 'Okay friend. Which item do you need the most?' 'I need 3 pack of fire wood and 2 pack of food and 2 pack of water'
Utterance: 'But If I will give you these items I don't get enough package friend.'

Answer: Yes

Question: Context: 'Me too. We invited a lot of extra friends' 'I am hoping we have enough food. I'm worried we might run out so I'd like to get some more ' 'I know we need extra food too and some firewood. Maybe a little water but we shouldn't need too much'
Utterance: 'It sounds like we are looking for the same things. I think there are some extra we can share. Do you have an idea about how it can be the most fair? '

Answer: Yes

Question: Context: 'I can. How about firewood? I would like 2 if possible.' 'Well there are only 3.' 'Of course. Since you're getting more water, I was hoping to get 2 firewood, and you could have the remaining 1. Would that work for you?'
Utterance: 'Water was my high priority and food was your's, so I think we already split the difference there. '

Answer:
Yes