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: 'Yeah, firewood isn't really something that's "essential" I'd have to say. Yeah, you need it, but still.' 'True. 🙂' 'Seems like we'll be struggling to see who gets the firewood most of all haha'
Utterance: 'No, I like a little firewood.'

Answer: No


Question: Context: 'LOL - not a chance.  You're going to have to give me more than that.  I am more skilled and thus need firewood.  How about this...I will take 3 firewood and 2 food.  You can take all the water because you're so non-skilled in the wilderness. I am going to hunt for my food, but again I have a large family.  I am not considering your request  at all.  We will need to come to a decision relatively soon.' 'I understand your preferences. If I take all of the water, 1 firewood, and 2 food your family will still have the opportunity to have a good camping trip and I can learn to survive on this trip. Please consider my request again.☹️' 'Ok - you're not being reasonable at all.  If you're so incompetent at going camping, maybe you should stay home and I can take all the supplies. How's that for an excellent offer?  All for me and 0 for you.'
Utterance: 'I think it would be good to come to a compromise. If I take all of the water and have the 2 foods, you can take all of the firewood as you originally proposed. Yet, I will have a tough time learning how to survive on a camping trip.😡'

Answer: No


Question: Context: 'So do I, I have health issues.  I can give you one firewood, if I get all the food. ' 'why can't i get 2 firewoods?.......i'm an ulcer patient i need more than enough food to keep fit'' 'It will be a strain, but I can give you 2 firewood if I get all the food and two water.'
Utterance: 'No that food is very much important to me......i'll get 2 food,2 firewood and 1 water'

Answer:
Yes