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 yes, I have my whole family coming. I'm really excited because we don't see each other often. My aunts, uncles, cousins. Some of us will hike while others stay back. Maybe we can come to an agreement? Will you also be hiking?' 'Yes hiking for sure.  If I take 2 firewoods and give you 2 waters and 1 food, would that be acceptable?' 'I think that could work '
Utterance: 'Thank you.  Have a great time and stay safe. It's going to be a blast for sure. '

Output: No


Input: Consider Input: Context: 'bro i need aslo food, it is  my first priority' 'what is is your second item in your priority list?' 'firewood'
Utterance: 'what/ we have same priority items, how do we split this to ensure equitably '

Output: Yes


Input: Consider Input: Context: 'oh god. without food and water how can i survive in the camping trip?' 'This is true. Although we're negotiating for extra provisions.  I understand your situation, though.  I can use 1 pack of firewood, 2 pack of water and just 1 pack of food.' 'okay fine. now it is suitable for both of us'
Utterance: 'That sounds good.  Thank you for being fair and agreeable.  '


Output: Yes