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: 'k, then 2 is for u 1 for me but i need remaining two as per my priority' 'What does that mean?' 'means water and firewood  i need majority then only it will balence'
Utterance: 'make firewood majority for me'

Answer: No


Question: Context: 'oh it turns out I need firewood too!🙂' 'Ha what a surprise! ;-) What do you need second most?' 'I need food to feed all my friends that are coming up. how about you?'
Utterance: 'Haha yup me too. I have a teenage son who eats about 5000 calories a day. Okay, I think the most fair option is one of takes 2 firewood and 1 of the other two items. I don't care who.'

Answer: Yes


Question: Context: 'Hello I'm really hungry and thirsty and want some food and water if that's ok with you. ' 'Well some is okay but not all. The thing is that we left in a hurry and forgot to pick up the bag with the extra food items. I am sorry but we have kids with us so we will need the food. Am sure you understand ☹️'
Utterance: 'Fair enough I understand that you have hungry kids. If I give you the majority of food can I get a majority of the other two items?'

Answer:
Yes