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.

Example Input: Context: 'I can give you more food if you like but I really need the water' 'It seems we both need the water so If you want 2 water, I would need all the food and firewood as well.' 'How about this I give you 1 package of  water, 2 packages of food, and 3 packages of Firewood.  You get the majority of my items'
Utterance: 'I guess that could work and seems pretty fair for all.'
Example Output: Yes

Example Input: Context: 'I can have two food then and one wood and you can have the rest of the items' 'bro make it 3 food for me, u can take 3 fire wood  give me to water' 'you are not being fair, bare in mind we have same priority, so if you take all the food you have to give me the wood and water, or you can take all the wood and water and give me the food'
Utterance: 'you also not fare,you also not  ready to give a give offer, give me 3 food , remaining one firewood one water 3 1 1'
Example Output: Yes

Example Input: Context: 'Exccellent.' 'So I take all 3 packages of food and you take all 3 packages of water?' 'How about I take 2 packs of water, you take 1 pack. I take 1 pack of food and you take 2 packs of food'
Utterance: 'Well, I would rather not. I might starve if I don't have all 3 packages of food ☹️'
Example Output:
Yes