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: 'That's true but we don't want to be dehydrated either since we have so many people haha. Here's my suggestion: 2 waters for me and 2 food items for you?' 'if u had hungry means what will u do. u need food. right. hehehe' 'I'm willing to give more food to you in exchange for more water since not everybody in my group eats a lot. How about this: I take 2 waters, 1 food, 1 firewood and you can get everything else?'
Utterance: 'ok i accept ur thoughts.sharing is good habit'

A: Yes
****
Q: Context: 'The food seems to be #1 on my list , if we could find a way to divide this up between us I'd like that a lot 🙂' '😮 Food is #1 for me as well! What a pickle. My #2 is Firewood and my #3 is Water. We can split the Food and divided the Firewood and Food based on how important they are to us.' 'True we can , I'd be willing to just take one of the foods if you'd be willing to do that ? Then we can decide on the others '
Utterance: '🙂v it sound's like we're on the right track! I'll gladly take 2 Food. How would you feel about taking all of the Water, while I take all of the Firewood?'

A: No
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Q: Context: 'I'll only give you all the firewood if you give me everything else. I know it's your top priority😮' 'How about I take all the wood, give you all the food, you can have 2 waters and I can have one. Having a little extra water will help me with all the hiking we will be doing, plus since i wont be eating much I want to stay hydrated. Will that work for you>>🙂' 'cringe ☹️. Ill take one firewood and two of both water and food '
Utterance: 'Sorry - I just cant do that. I want to come to an agreement but dont feel that its fair. '

A:
Yes
****