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.

Q: Context: 'yeah you are right, but water is essential for all !☹️, you must consider that too' 'I agree water is needed. I can do 2 water 2 firewood and 0 food' 'you consider me giving one of your water package and collect food package, if you are lucky you can get liquid foods too🙂'
Utterance: 'I don't like food. my stomach is always full. I only drink water since im thirsty most of the time.'

A: No
****
Q: Context: 'i am an avid water drinker. i can afford to give you 2 water for three firewood though' 'I have alot of children, and those little rascals can chug water like there is no tomorrow, will you allow me to get the 3 waters and you can have 2 firewood and and 3 foods, what do you think?' 'i need the firewood because i tend to catch a cold easily and also scared of the dark. i can give you 2 water and 2 food for 3 firewood and i food'
Utterance: 'will you allow me to get 3 waters and you can have the 3 firewood and 2 foods? 🙂'

A: No
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Q: Context: 'hi  i was wondering if i could get 3 packages of firewood?'
Utterance: 'Hey there, unfortunately, I'm in a bit of a quandary with firewood too, as I am going to a place where it's fairly cold and will need more for heat. '

A:
Yes
****