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.

Ex Input:
Context: 'Interesting.  If I decided to forgo water completely, would you accept giving me everything else?' 'no, at the most i can do is i get 2 water, 2 food and 0 firewood or I get 1 water, 3 food and 1 firewood' 'But you get everything you wanted. You said you needed 3 water, I offered it to you.'
Utterance: 'but i can't give you 3 food and 3 firewood, thats 6 items vs the 3 water'

Ex Output:
Yes


Ex Input:
Context: 'Hi! How are you?' 'I am fine. How is your camping trip going?' 'I'm just finishing the final details of packing. I'm a little concerned I don't have enough of a few things. It is supposed to be over 100 degrees where we are going, and I don't think I have enough water. I'm concerned my kids are going to get dehydrated. I really could use 3 extra packages. '
Utterance: 'That will not be possible i am afraid. I need at least 2 packages of water too. I have some tabs that i have to take with water regularly.'

Ex Output:
Yes


Ex Input:
Context: 'Interesting. Looks like we are in the same situation! 😮' 'I'd be willing to give you extra food if I could then get extra water and firewood. How about you Get 2 food, 1 water and 1 firewood?' 'That sounds almost fair. But I could possibly use 1 more firewood. What do you think?🙂🙂'
Utterance: 'Idk, you're already getting the extra food which would be important to me. I think my offer is very fair for both of us.'

Ex Output:

Yes