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 uv-part strategy, otherwise output No. uv-part is a selfish negotiation strategy. It is used to undermine the requirements of the opponent. For instance, suggesting that the opponent would not need more firewood since they already have the basic supplies or a suggestion that there might be a store near the campsite where the opponent can get the supplies instead.

Context: 'Hello, I would really like to get most of the water and firewood packages.' 'You can have most of the water and firewood if I can have most of the food. I would like to get two of the firewood so I have a nice fire to come back to after searching for a source of water.' 'How about I take all off the water, 1 firewood and 1 food package? 🙂'
Utterance: '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!'
Yes

Context: 
Utterance: 'Hello! I'm packing for my camping adventure.'
No

Context: 'I'm afraid I also have need of the firewood. I have anaemia so i get cold easily so I need to make sure I have adequate firewood or i may freeze at night. I also have a thin clothing so they wont provide adequate warmth. How about all of my water and 2 food for all of the firewood?' 'Seeing as we both have a medical-necessity for the firewood, it's rather unfair that either one of us take ALL of the firewood. I felt that I was being rather generous with my previous offer.' 'you are right we both need the wood, how about i give 1 wood, all of my water and 2 food and you give 2 wood and 1 food?'
Utterance: 'Where are you camping? Perhaps we can compromise by having our tents nearby each other, which would be like we each get three firewood? I am not willing to trade my package of marshmallows, though.'

Yes