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: Consider Input: Context: 'Hi! How is your camping trip going?' 'It's going good we could use some more supplies such as food and firewood, though.'
Utterance: 'Same here haha. Is water your lowest priority item too?'

Output: No


Input: Consider Input: Context: 'Hello, how are you doing on this fine day?'
Utterance: 'Hello, I am doing awesome today. I am so glad I was able to get way and come camping. My bother just called me and said he is going to be coming. It was a surprise for him to be able to come🙂 How are you?'

Output: No


Input: Consider Input: Context: 'Well, I have two teenage boys who will be with me.  In normal circumstances they go through a lot of food.  While camping, hiking and kayaking I know we will need plenty to keep their energy level high to do everything.🙂' 'Well I will definitely need 2 packages of food and 2 of firewood for survival.' 'I am definitely ok with giving you two of the firewood!!  Why do you need 2 packages of food?'
Utterance: 'I have a very fast metabolism and a dog to take care of. Thanks for the firewood.'


Output: No