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: 'No i really need all the water, if its a deal breaker than you can have all the firewood.' 'ok - i will take all the firewood and the 2 food, you can have all of the water and a food - that works for me. if i have extra firewood i can boil any water to make some drinking water' 'That sounds great. We should both have a great time camping now. '
Utterance: 'i agree! '

No