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 🙂' 'I was thinking that you could give me 3 food packages and i will give you 3 water? What do you think?'
Utterance: 'If I do that I would also like all three firewood'
[A]: No


[Q]: Context: 
Utterance: 'hi there 🙂'
[A]: No


[Q]: Context: 'You have food and water, this is just extra supplies' 'I know but with my condition i may not make it, especially without more water.😮' 'you can make water by boiling water with all that extra firewood you got'
Utterance: 'you said I could have some firewood'
[A]:
No