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.

Context: 'Okay so we can think about splitting the firewood. 🙂 I'm also interested in water because I plan to do a lot of activities like hiking and kayaking, so it will be helpful for me to be able to hydrate more.' 'That is okay. What about i get 2 packages of firewood and then you get 2 packages of water. Is that okay with you?' 'Since I'm most interested in firewood, I would want 3 waters if you're going to get more firewood.'
Utterance: 'Nice. That's okay with me. You get 3 waters and a I get 3 firewood'
No

Context: 'Can you help out? I can easily dehydrated can you give all the water packages to me?'
Utterance: 'I can spare a little as I am currently taking medication that requires me to drink a lot. I can give you 2 bottles of water if you can give me 3 firewood'
No

Context: 'Well i do not need the water at all as i have a distiller' 'And I have plenty of food as I'm the only over eater of the group.' 'OK how about 2 firewoods me 2 foods me 1 firewood you 1 food 3 water'
Utterance: 'If I'm only getting 1 firewood let me have 1 extra food then. So you can have the 2 firewoods, plus 1 food. I'll get 1 firewood, 2 foods and 3 waters. You get the most important item so I'm thinking that's fair.'

Yes