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: 'Well I don't mind either way about the food. I'll recommend giving you 2 firewood 1 food and 1 water. ' 'how about you get 3 waters and 2 foods? Does that work better?' 'yes how much firewood. I need at least 1 to cook the food.'
Utterance: 'you should have enough firewood in the basic supplies to cook the food i think, with three waters and 2 foods you get 5 items and i get 4'
Yes

Context: 'I would really like to have 3 waters and 3 firewood because this is my first time camping and I don't have survival skills. ' 'You must be a comedian.  We will need to come to a compromise because there's no way that's going to happen.  I am like a water buffalo so I'll need at least two waters.  In addition, my family is from the South and will need firewood as well.' 'I can't swim too. I think two waters will help me to survive on this trip and I will need at least two firewood to make fish or other food items for my family. '
Utterance: 'You don't need this water to swim.  You can take two of the food if you're worried about food.  I will take two water and two firewood since I have a large family to nourish and keep warm.  Your initial suggestion of 3  waters and firewood is laughable.  Please provide a realistic compromise.'
Yes

Context: 'that works for me - would you be willing to give me 1 of the waters that way i at least have a little extra' 'No i really need all the water, if its a deal breaker than you can have all the firewood.' 'ok - i will take all the firewood and the 2 food, you can have all of the water and a food - that works for me. if i have extra firewood i can boil any water to make some drinking water'
Utterance: 'That sounds great. We should both have a great time camping now. '

No