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.

[Q]: 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?'
[A]: No


[Q]: Context: 
Utterance: 'Hi, I hope we can work together to get an offer that benefits both of us.🙂'
[A]: Yes


[Q]: Context: 'We need a moderate amount of everything and I think we can work something out successfully.' 'got it, OK I'll start then. I'd like at least 2 firewood' 'Okay. we brought some of our own food so I don't need much of that either.'
Utterance: 'do you want more water then? perhaps 2?'
[A]:
No