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 2 packages of food or firewood instead' 'Hmm. I'm not able to compromise on this, I'm fine with 1 package of firewood and food each.' 'I really need 2 packages of water '
Utterance: 'I get dehydrated quickly, so given my condition, I'm not able to compromise on water.'
[EX A]: Yes

[EX Q]: Context: 
Utterance: 'Hi  - nice to meet you!  I hope we can work out a deal that is good for both of us.'
[EX A]: Yes

[EX Q]: Context: 'How about 1 water, 2 food and 2 firewood?' 'I don't really need food, to be honest. Food is the least of my worries.' 'how about 1 water, 1 firewood and 3 food ?'
Utterance: 'For you?'
[EX A]:
No