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.

Input: Consider Input: Context: 'Hello there.' 'hi' 'So I plan to go hiking a lot this trip and I would appreciate a majority of the water and firewood if possible.'
Utterance: 'I want to go on hiking too. Since I don't go alone I need food and water.'

Output: No


Input: Consider Input: Context: 'You have food and water, this is just extra supplies' 'I know but with my condition i may not make it, especially without more water.😮' 'you can make water by boiling water with all that extra firewood you got'
Utterance: 'you said I could have some firewood'

Output: No


Input: Consider Input: Context: 'That would make things better for me.  ' 'Can I ask you why you need so much water for one person? ' 'Hiking in the summer, I sweat a lot and I don't want to risk getting dehydrating and sick out in the woods.'
Utterance: 'Well this might work out, I will agree to take 2 food, 3 firewood and 1 water. I think we will be fine because we are not going hiking. We are going to sit around campfire and catch up on old times. Good deal for both of us if you agree. 🙂'


Output: Yes


