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: 'Mine too! Camping is one of my favorite things to do with my family.' 'It should be a good weekedn for it.  Unfortuately the air;ine loss our luggage with the sleeping bags and food.  Not a good start for us with my mother-in-law along for the first time.  My wife and her is down getting trail maps while I sort out keeping warm tonight and feed after some hiking.' 'Oh no! That sounds like a problem. I have four kids so I can relate about the concerns for staying warm and having enough food.'
Utterance: 'I see they have some supplies here to share between the camp sites.  Maybe we can divide up the supplies so it works for both of us.  I can really use 2 wood and 2 food.  What about yourself?🙂'

Output: Yes


Input: Consider Input: Context: '😡 I can let the firewood and water lax if you provide us food.' 'let me have two food and three parts of water, I can let you have all the firewood and one fpart food' 'We do have a fire to start, but we are very hungry. Diabetics can eat less food because of the small meals. Don't lie to me.'
Utterance: '😡my type of diabetes needs many meals otherwise my insulin levels will be low'

Output: No


Input: Consider Input: Context: 'I have food, water and firewood.' 'Ok so whoever gets more wood should get something else higher' 'How bout this deal, me - 3 water, 2 firewood, you 3 food, 1 firewood'
Utterance: 'Sounds alright'


Output: Yes