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: 'Hello partner  How are you today?' 'Oh, I'm a bit ill, fever, chills.'
Utterance: 'SO do I😮!!!  That is not good.'

A: No
****
Q: Context: 'That's fine, I'll take 1. I think I have enough with what was originally given. ' 'Sounds good! So I get 3 firewood, 2 food, 0 water; you get 0 firewood, 1 food, 3 water?' 'That's sounds right. Thanks 🙂'
Utterance: 'Cool, I'

A: No
****
Q: Context: 'I have 10 people in my group' 'I see. I need more water because I came across some people who were lost and they are very dehydrated.' 'I need 2 firewood because it gets below freezing at night'
Utterance: 'Oh I wouldn't want for you to freeze☹️ It also gets cold where I am, so I need 2 firewood as well.'

A:
No
****