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: 'I will take 2 waters, however I would like 2 food and you can have 1 food and 3 firewoods' 'one food is not enough i am pregnant and i need to eat many meals' 'My friend is ill and needs to eat to survive. How about I take 3 water then and you can have 2 food and all of the wood?'
Utterance: 'sounds reasonable'

Output: Yes


Input: Consider Input: Context: 
Utterance: 'Hello I hope we can negotiate so that we are both satisfied. Do you think it's OK?🙂'

Output: Yes


Input: Consider Input: Context: 'Hi, I would like to get firewood because I would like to sit by the campfire in the evening.'
Utterance: 'Hi there. I was really hoping to have the firewood because I am afraid my children would be cold.'


Output: No