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.
One example: Context: 'Yeah, I'm going to the desert so I'm hoping to have enough water. I'm good on food and I hunt for a lot of it anyways.' 'I've never been a good hunter. I wish I had those abilities.' 'I would part with all the food if I could get all the firewood.'
Utterance: 'That seems fair. How about water. How would that be split? I'm very concerned.'
Solution is here: Yes
Explanation: This is correct since the participant points out that the proposed deal seems fair.

Now, solve this: Context: 'understood, I can give you 1 firewood, 2 food, and 2 water to make your trip better.' 'Hm. I''ll definitely take you up on the water, thanks for that. The thing is, I have low blood pressure, and I have trouble regulating my body temperature so I am frequently cold. How about if I take two firewood, and the two waters. It sounds like you are going to do a lot of cooking, so you can take two of the food.  ' 'Will you take two firewood, 1 food, and 1 water?'
Utterance: 'I don't want to take too much food, I want you to be able to enjoy all the cooking you are going to do🙂! But I would like two waters--I'd be afraid of dehydrating on my trip. I'd even throw in the extra food! that would give you all three! you could really do some cooking then! '
Solution:
Yes