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.

Input: Consider Input: Context: 'Oh, well that's really nice of you. What do you propose?' 'You'll get 3 food and 2 water, and I'll take 3 firewood and 1 water. 🙂' 'Hmm, I think that could definitely work! Appreciate it 🙂'
Utterance: 'Sound great 🙂'

Output: No


Input: Consider Input: Context: 'That's true but we don't want to be dehydrated either since we have so many people haha. Here's my suggestion: 2 waters for me and 2 food items for you?' 'if u had hungry means what will u do. u need food. right. hehehe' 'I'm willing to give more food to you in exchange for more water since not everybody in my group eats a lot. How about this: I take 2 waters, 1 food, 1 firewood and you can get everything else?'
Utterance: 'ok i accept  ur thoughts.sharing is good habit'

Output: Yes


Input: Consider Input: 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?  '


Output: Yes