Definition: 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.
Input: Context: 'You're right, I meant to say that I need additional food and water.' 'So, let me know how much exactly do you want of each item' 'I would like 2 packages of food and 2 packages of water.'
Utterance: 'In that case, I can take 2 packages of firewood. So , it would be a fair deal. I can share with you in case you have the need.'

Yes