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: 'I don't think I will be able to give you 2 waters. I'm desperate. I need at least 2. I would give you 1 if I could get 3 packages of food. I would give you all the firewood. ' 'If i give you 3 packages of food then i will take 3 packages of firewood.' 'So I get 2 waters and 3 foods. and you get the rest?'
Utterance: 'I could use one food too. How am i going to survive without eating anything?'

Ex Output:
Yes


Ex Input:
Context: 'I have a big party with varying degrees of health and I'm going to need every bit of firewood and food I can get my hands on!  🙂' 'hi, we may be in luck then, i really would like water as i enjoy walking and hiking, i will require some firewood though so i can roast some s'mores' 'How many people are in your camping party?'
Utterance: 'i have 6, and 2 more could be joining us to make 8 '

Ex Output:
No


Ex Input:
Context: 'I will want to get some extra supplies before I go. ' 'Same. My family is coming with me so I want to make sure we are extra prepared' 'Me too. We invited a lot of extra friends'
Utterance: 'I am hoping we have enough food. I'm worried we might run out so I'd like to get some more '

Ex Output:

No