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.

[Q]: Context: 'Yes, can you live with two foods? ' 'I can. How about firewood? I would like 2 if possible.' 'Well there are only 3.'
Utterance: '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?'
[A]: Yes


[Q]: Context: 'I am doing well so far. 🙂 What items are of preference for you today?' 'I need a lot of food today. I was advised to eat at least 4 times a day so i may need all the food packages.' 'Well that is not going to work well for my family of 8 now is it? Haha. I think we can come to some sort of agreement though.🙂'
Utterance: 'What do you propose?'
[A]: No


[Q]: Context: 'No 3 packages of firewood, 1 package of water, and I can give you 3 packages of food.  I need the Firewood the most.' 'Tell me why you need so much firewood?' 'I have other people coming with me and we don't have insulated sleeping bags.  The temperature also drops drastically at night.'
Utterance: 'Well i need at least 1 firewood so we have to make that work'
[A]:
Yes