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.
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Question: Context: 'Yes and as a return ill give you 70 percent of what I get-- So with me managing the firewood for you, you will get more time with the kids.' 'That's so nice of you! I would just feel more secure if I kept 2 of the firewood with me while you are out though, just in case of emergency. You wouldn't need it just for the few hours you would be gone. ' 'If that were the case I would need extra food since I would be behind trying to get more firewood..  '
Utterance: 'That makes sense. I would be willing to split the extra food package with you when you get back to camp. Then we would be even all the way around.  '

Answer: Yes


Question: Context: 'so you want two firewoods and three waters and I get everything else? ' 'That sounds good to me!' 'I really need at least two firewoods to cook with though, or one water. How can we make this work?'
Utterance: 'I could give you two firewood, if I could still have my three waters and then 1 food.'

Answer: No


Question: Context: 'I really need water because I take medication that requires drinking a lot of water. The firewood I dont need to much off and I need very little food as I am dieting. lol 🙂' 'I totally understand that. And it's pretty important, lol ' 'It sure is..So how much food do you need for the trip? Do you need firewood to cook the food? Thank you for understanding my issues. 🙂'
Utterance: 'I definitely need the food the most. I'm definitely not a "hunter", so if I were to run out, I'd be in pretty sad shape. I do need the firewood for both cooking, and keeping warm. It gets cold at night where we're going. How about youself?'

Answer:
No