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: 'Oh dear, you spilled your water and forgot your grill?  You mentioned that you had a car.  Perhaps you could take a quick drive to grab some extra water.  For now, I definitely agree that you need 1 extra water and 1 firewood.  I will need 2 of the extra food portions though.  How does that sound? ' 'Wish it was an easy car ride.  We're miles and miles from a store and it's getting dark.  I don't do well driving in the dark.  I think we might be getting close to agreement.  As I understand it:  you would get 1 water, 2 firewood and 2 food portions?  Is that correct?' 'Actually, I suggested that you would get 1 water, 1 firewood and 1 food portion.  I can compromise with you though.  I would like 2 water portions, 1 firewood and 1 food.'
Utterance: 'Since I arrived with no water at all, I would definitely need at least 2 waters.  I'm afraid I don't have a lot of "wiggle room" with that.  I'm open for the other supplies.  Ideally, I would like to have 2 waters, 1 firewood and 1 food portion.'
Output: 


Answer: Yes