TASK DEFINITION: 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.
PROBLEM: Context: 'I would be ok with that but i will need some water and food as Im a little out of shape' 'I can get you one package of water and food, will that work?' 'how am i supposed to stay alive with one package of food and water im fat lol'
Utterance: 'I don't think you that fat, your lipids will help you stay warm and full out there, haha'

SOLUTION: No

PROBLEM: Context: 'I would like a little extra food for myself as well. Would you be willing to split the food 1 for me and 2 for you? ' 'I'd be willing to do that if you gave me some water and firewood in exchange' 'How about I keep 2 firewood, you take 1? What do you propose for the water?'
Utterance: '1 food for 1 firewood isn't a good trade for me. I would need at least 1 firewood and 1 water to trade for 1 food.'

SOLUTION: Yes

PROBLEM: Context: 'You can have all of the water if I can have all of the food. I promise that I will bring you back food. I am really good at foraging and I know all about what is edible in a forest 🙂 I want to have two packages of firewood so that I can have a roaring and hot fire going when I come back from being out all day. I am sure that I will find some fish to catch at my water source! 🙂 I'll bring some to back to share with you!' 'Thank you, I would appreciate that and it is very generous of you, Im not a strong hunter or fisher at all :) ' 'Awesome! I think we have a deal! So just to clarify, I will have all the extra food so that I can have strength to forage, you will have all the water, and I will have 2 firewoods so I can have a hot fire for our catch of the day! Are you happy with this, friend? 🙂'
Utterance: 'I do agree with that, I am happy with all of the extra water, and I should be able to get more firewood pretty easily, and since you will be sharing whatever food you find, I think that we came up with a pretty fair split.'

SOLUTION:
Yes