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: 'The food seems to be #1 on my list , if we could find a way to divide this up between us I'd like that a lot 🙂' '😮 Food is #1 for me as well! What a pickle. My #2 is Firewood and my #3 is Water. We can split the Food and divided the Firewood and Food based on how important they are to us.' 'True we can , I'd be willing to just take one of the foods if you'd be willing to do that ? Then we can decide on the others '
Utterance: '🙂v it sound's like we're on the right track! I'll gladly take 2 Food. How would you feel about taking all of the Water, while I take all of the Firewood?'

Output: No


Input: Consider Input: Context: 'doesn't really seem fair for you to get all the firewood. I would like to have at least one because then we're completely in the dark.' 'You get lots of water and food for your children, I am cutting back on my goals by giving up energy which means I have spend more time outside hiking.  I do need to stay warm' 'yes which is why you have two firewood. I think it is fair for me to get at least one. If food is so important to you then I'll give you two food. but we would be in the dark'
Utterance: 'I suppose that's fair enough.'

Output: Yes


Input: Consider Input: Context: 'Hey hi, nice getting to interact with you. I'm doing good, thank you. Wish it's the same with you. I get dehydrated quickly and need additional packages of water.' 'we both have the same high value priority. what is number 2 for you? thanks' '🙂 Food'
Utterance: 'me 2 lol, what if you got 2 of the water and me 1 but then i could do 2 of the food and firewood and things would kind of even out with that arrangement.'


Output: Yes