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.

Context: 'I would need more firewood for my camping trip. ' 'That is good to know. Firewood Isn't very important to me, so you are welcome to all of that if you need it. ' 'It's nice to know the firewood is not important to your camping trip. I'm glad I can have all the firewood to myself. How do we get to share the other resources. '
Utterance: 'Actually, I think I may need more food than water. How about I take the food and we can split the water. You may have 2 waters, if you need them.'
No

Context: 'Hi! How about I receive 3 food, 2 firewood, and 1 water?' 'I can't do that. It would leave me with no food at all. How about I take 2 food, and 1 firewood, and 1 water?' 'I really need more food than 1. I am worried about running out. I could take 2 food, and give you 1 food, 2 firewood, and 2 water.'
Utterance: 'That is a very generous offer, which I very much appreciate. But I am also worried that I could run out. What if I take 2 foods, give you 2 firewoods, and 1 water?  '
Yes

Context: 'Hello, I'm in a strong need for food and water. Please let me have a few packages of food and water. I'd gladly trade all my firewood for it.'
Utterance: 'Hello. Wow! That does not sound good. My sister just called and let me know she will be coming tonight. She is bringing food so i have plenty to share. 🙂'

No

