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: 
Utterance: 'Hello. I'm looking forward to striking a deal with you that makes both of us happy!'
Example Output: Yes

Example Input: Context: 'Well that's interesting because I don't even know what is is.' 'We aren't allowed to submit it just yet. So let's chat. What do you value most among the items?' 'Please don't try to order me around. 😡 I require a majority of water.'
Utterance: 'Let's be reasonable here. If you are nice to me I'll be nice to you. I'll take the majority of the wood and food if you want most water.'
Example Output: Yes

Example Input: Context: 'It's been so cold these last few days, I'm worried that I didn't bring enough wood for the next few nights.'
Utterance: 'That is unfortunate. How about I give you are my firewood for all your food?'
Example Output:
No