You will be given a definition of a task first, then some input of the task.
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.

Context: 'Hello , yes I am , going to have lot fun . Are you excited ?' 'I sure am! There's just the little matter of dividing up the remaining resources, but I'm sure we'll be able to come to an arrangement that suits both of us! What would you say are you most important resources for this trip?' 'The food seems to be #1 on my list , if we could find a way to divide this up between us I'd like that a lot 🙂'
Utterance: '😮 Food is #1 for me as well! What a pickle. My #2 is Firewood and my #3 is Water. We can split the Food and divided the Firewood and Food based on how important they are to us.'
Output:
Yes