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 love camping also!  Yes, I can see how you would need firewood if you want to cook your food.  So, food is more important to you than water?' 'Yes, I will need a little water to wash that food down with though. Are you going to be needing a lot of water?' 'Yes, I may need more water.  I am on a diet and I don't really cook either!  Hopefully we can work something out here.'
Utterance: 'That sounds great. I probably need to go on a diet, but I like my food to much. LOL'

SOLUTION: No

PROBLEM: Context: 'brother  k ,  bro  2 water and 2 wire wood 1 firewood can you given?' 'I think that that is acceptable to me. I want to make sure we both understand: I get 1 Water, 2 Firewood, 2 Food Packages. You get 2 Waters, 1 Firewood, 1 Food Package. I will have to ration my water, but I think the extra comfort is worth it. Does this work for you? ' 'bro its not profitable ratiobro gave 3 water 1 firewood, remaning you can take'
Utterance: 'Won't you feel hungry? I'll accept that deal if we can exchange one water for one food package. That still leaves you with two waters. I think that's the least I'm willing to accept.'

SOLUTION: Yes

PROBLEM: Context: 'I do understand. That will work for me. ' 'Could you tell me about why you want water? ' 'I want water so I can keep hydrated during this camping trip. It's important for me to drink bottled water vs. getting water out at camping as it may flare up my disease. '
Utterance: 'Oh interesting! I have a device that allows me to drink pond/stream water by cleaning it, so water isn't as important to me.'

SOLUTION:
No