TASK DEFINITION: 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.
PROBLEM: Context: 'I have enough food too. Can I take 2 water, 1 firewood and 2 food?' 'How about two water, 1 firewood and 1 food, since we both value water the most?' 'Is that what you want or what you are offering?'
Utterance: 'That's what I'm offering to you, but I think it's a fair deal, so I'd accept it myself, too.'

SOLUTION: Yes

PROBLEM: Context: 'okay friend. In my team old age sicked peoples and kids are there so i need some extra package.' 'Okay friend. Which item do you need the most?' 'I need 3 pack of fire wood and 2 pack of food and 2 pack of water'
Utterance: 'But If I will give you these items I don't get enough package friend.'

SOLUTION: Yes

PROBLEM: 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.'

SOLUTION:
No