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: 'Food doesn't prevent cold. Thank you for giving me all the food but I need 1 wood to cook the additional food. You still end up with more items in the  end  ' 'Okay I accept the deal.' '🙂awesome thank you'
Utterance: 'Sorry, I thought that I can manage with two woods, but the temperature is very loo and many people need to save their life.  Please change the deal and provide us 3 wood.'

Yes