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.

[EX Q]: Context: 'I can give you more food if you like but I really need the water' 'It seems we both need the water so If you want 2 water, I would need all the food and firewood as well.' 'How about this I give you 1 package of  water, 2 packages of food, and 3 packages of Firewood.  You get the majority of my items'
Utterance: 'I guess that could work and seems pretty fair for all.'
[EX A]: Yes

[EX Q]: Context: 'It sounds like we are going to have a really good weekend!  I'm pumped up!  We'll have enough firewood to keep warm, lots of water, and food as well!' 'Excellent' 'Thanks for coming along!  I'm glad we are going to have plenty of supplies.'
Utterance: 'Great'
[EX A]: No

[EX Q]: Context: 'I can give you 2 units of water, but I need at least 1. ' 'I also need firewood, I have some health issues.  I need the wood to keep warm at night, and for cooking fish.' 'I can give you 2 units of firewood, but I need at least 1 as well. '
Utterance: 'How much food do you need?'
[EX A]:
No