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: 'You can have all of the water if I can have all of the food. I promise that I will bring you back food. I am really good at foraging and I know all about what is edible in a forest 🙂 I want to have two packages of firewood so that I can have a roaring and hot fire going when I come back from being out all day. I am sure that I will find some fish to catch at my water source! 🙂 I'll bring some to back to share with you!' 'Thank you, I would appreciate that and it is very generous of you, Im not a strong hunter or fisher at all :) ' 'Awesome! I think we have a deal! So just to clarify, I will have all the extra food so that I can have strength to forage, you will have all the water, and I will have 2 firewoods so I can have a hot fire for our catch of the day! Are you happy with this, friend? 🙂'
Utterance: 'I do agree with that, I am happy with all of the extra water, and I should be able to get more firewood pretty easily, and since you will be sharing whatever food you find, I think that we came up with a pretty fair split.'
Output: 


Answer: Yes