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: 'Hi! How about I receive 3 food, 2 firewood, and 1 water?'
Utterance: '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?'
[A]: Yes


[Q]: Context: 'Well i do not need the water at all as i have a distiller' 'And I have plenty of food as I'm the only over eater of the group.' 'OK how about 2 firewoods me 2 foods me 1 firewood you 1 food 3 water'
Utterance: 'If I'm only getting 1 firewood let me have 1 extra food then. So you can have the 2 firewoods, plus 1 food. I'll get 1 firewood, 2 foods and 3 waters. You get the most important item so I'm thinking that's fair.'
[A]: Yes


[Q]: Context: 'I am severely malnourished and could use just one more food please' 'we got kids on this trip, they need food too.  also, your basic supplies should keep you fed well enough to not starve/be malnourished' 'I have kids as well who need food. I am just asking for one more food'
Utterance: 'we've given you all of the firewood, 2 of the waters'
[A]:
No