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: 'We have a shortage of trees in this area. Could we split those up evenly? I think that would be fair. Something like 2 of each with you getting the most of the water.' 'I really need some firewood. ' 'Yeah, that's priority #1 for us as well. If I give you one, could you give us most of the food and water then?'
Utterance: 'I definitely need one firewood. I can use either one more water or one more food. I will leave up to you. '

Yes