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: 'I like to eat.  I think extra food is good.  Are you willing to let me have all three food packs? 🙂' 'I would want to keep at least one packet of food for myself, unless you want to just swap 3 firewoods for 3 packets of food, to keep it simple?' 'I like your plan.  It is simple. I will agree to that.'
Utterance: 'So all that is left is water, i guess i should atleast drink alot of it if i wont eat much haha 🙂'

Output: No


Input: Consider Input: Context: '😮 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 ' '🙂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?'
Utterance: 'Not really liking that , but I'd be willing to split the water with you if I could take 2 of those 🙂'

Output: Yes


Input: Consider Input: Context: 
Utterance: 'I would like all the firewood and two packages of water. You can have the rest.🙂'


Output: No