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.

[EX Q]: Context: 'I'm doing pretty good. I plan on camping with the family this weekend, how about you?' 'Nice. Same, it's over 100 degrees where I live. 🙂' 'Yikes! It's a bit colder up here, that's why I would like to bring some extra firewood to stay warm at night.'
Utterance: 'Oh, I see what you did there. No problem I have plenty of firewood for you buddy. 🙂'
[EX A]: No

[EX Q]: Context: 'Hmm I think I should take 2 food, 1 firewood, and 3 water. What do you think?' 'Is your first priority the water? I'm definitely willing to split up by what is most important to us both.' 'Food is actually my first priority but since it seems to be first priority for us both I thought we could split that. Water doesn't seem to be a priority for you so thought I could take that'
Utterance: 'My first priority is actually firewood. Food is my second. 🙂'
[EX A]: No

[EX Q]: Context: 'Hmmm, I think I really need the firewood. I brought softwoods and they burn out quickly so I don't think I'll have enough wood to keep me going through the night. I get kinda scared without the fire. What is your priority?' 'Okay, well firewood is also my top priority since it will be so cold tonight. But I would be willing to take only 1 firewood (and give you 2) as long as I got 2 foods and 2 waters ' 'Thank you for the offer on firewood. I think that sounds fair. However, I really would like at least 2 waters as well. '
Utterance: 'Hmm unfortunately I can't budge since I would be accepting less of my top priority item. It sounds fair to me though; I'd get 5 items in total but less of my top priority and you would get 4 items in total but more of your top priority'
[EX A]:
Yes