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.

Positive Example 1 -
Input: Context: 'Yeah, I'm going to the desert so I'm hoping to have enough water. I'm good on food and I hunt for a lot of it anyways.' 'I've never been a good hunter. I wish I had those abilities.' 'I would part with all the food if I could get all the firewood.'
Utterance: 'That seems fair. How about water. How would that be split? I'm very concerned.'
Output: Yes

Positive Example 2 -
Input: Context: 'I really need that extra food for me and my bother. we have one to spare' 'so what is the whole deal here? ' 'you get 3 firewood I get 3 waters and now food I will give you 1 if that is ok🙂'
Utterance: 'and I have to give you more food or not?'
Output: No

Negative Example 1 -
Input: Context: 'Heck yes! I am excited. How about you?' 'I can't wait 🙂 Let's talk about these supplies. I've got hungry mouths to feed, Can I take the food and you can have half the firewood and all the water?' 'Hmm, I need food too. I am willing to split. I will give you 2 food since you claimed it first. Can I have 2 waters then?'
Utterance: 'That's fair, but I have wiggle room on the water, how about I take two food, two firewood and you take 3 water, 1 food, 1 firewood?'
Output: No

Negative Example 2 -
Input: Context: 'You can take two firewood an i can get one. I really don't need much. of that. are you okay with that?' 'I am okay with that 🙂' 'okay an for as the water two for me an 2 for you right? are you sure?'
Utterance: 'Yes, as long as I can get two of the food. '
Output: Yes

Now complete the following example -
Input: Context: 'Hey! How are you? My bestie and I were going to be going on a camping trip, but my other friends heard about it and wanted to come along so we're going to need more supplies than I initially though which has got me a little worried. ☹️' 'Yes!!! I need some water pretty bad.  I am good on food because I fish and I have been able to catch some catfish from the lake.  How about I take 2 water 2 firewood and 1 food' 'I need a lot of food, because of how many people are coming now (like 3 times as many). Also, there's only one stream in the area and it's really far from our campsite, so it would be super inconvenient to have to hike there everyday to refill our canteens. We are in a forest though, so we should be good for wood. Since you can easily fish, what if I take 3 food and 2 water? You can keep all the firewood. 🙂'
Utterance: 'Well I have to have some food and I don't need all of that water.  How about I take 2 water, 1 firewood, and 1 food.  I do need the firewood to cook the fish but I dont need it to keep warm at night because I have hefty sleeping bags that work excellent in the cold.'
Output: 


Answer: No