instruction:
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.
question:
Context: 'If I take two waters, 1 firewood, and 2 food supplies, this will help me during the trip. It seems as if you are more skilled than I am on a camping trip. Please consider my request☹️' '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.☹️'
Utterance: '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.'
answer:
Yes


question:
Context: 'You are flipping it around. I can't give you 2 water and 2 firewood as that wouldn't really be fair ' 'Okay, how about if I give you 3 foods and you give me the 2 firewoods and 2 waters?' 'THanks, but I really need the water. I thought you would enjoy the food with so  many guests in your campsite. Is that a possibility?'
Utterance: 'I don't need 3 foods and we already agreed on 2 firewood, 1 water and 2 food. If that is not possible, I wonder if we can not make a deal '
answer:
Yes


question:
Context: 'Of course. So, what about food? I will definitely need the food. I have a big family, and we all need to eat. I can't have people starving. Can I take all of the food?' 'Okay I accept that.' 'Wonderful. And what about the firewood? I would like 2 firewood, and I can give you 1 firewood. Will you accept that?'
Utterance: 'Okay I accept your deal.'
answer:

No