TASK DEFINITION: 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.
PROBLEM: Context: 'I don't care about the firewood, but I would like food and water the most.' 'you can take water if i get all the firewood and some food' 'I'll take all the water, you can take all the firewood. What would be fair for the food?'
Utterance: 'we have to split it somehow'

SOLUTION: Yes

PROBLEM: Context: 'Thats great! Would it be okay if I got 2 packages of firewood, and 1 each of the food and water?' 'I would've like to have 2 packages of firewood instead. How about I give you all the extra water packages?' 'Well for a compromise I will give you the 2 packages of firewood, if I got 1 firewood, 2 food, and 3 waters. 🙂'
Utterance: 'Great, that sounds fair to me. '

SOLUTION: Yes

PROBLEM: Context: 'Hello, I would like to take all of the firewood and two of the water packages. You can take all of the food and the other water package. '
Utterance: 'I am not a fan of that deal'

SOLUTION:
Yes