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.

Example Input: Context: 'k i need food as first priority' 'Unacceptable' 'why'
Utterance: 'I require the majority of food as I have explained.'
Example Output: No

Example Input: Context: 'I need prefer water the most since my mouth is dry a lot. I need 3 water, 1 firewood ,and 0 food packages' 'yeah you are right, but water is essential for all !☹️, you must consider that too' 'I agree water is needed. I can do 2 water 2 firewood and 0 food'
Utterance: 'you consider me giving one of your water package and collect food package, if you are lucky you can get liquid foods too🙂'
Example Output: Yes

Example Input: Context: 'Understandable I am an avid outdoorsmen; Starting firewood is hard and can also be dangerous; how about you give me the two I will only use one you get one and I will be able to secure more within a few hours. ' 'Are you sure that you would be able to get more firewood on your own?' 'Yes and as a return ill give you 70 percent of what I get-- So with me managing the firewood for you, you will get more time with the kids.'
Utterance: 'That's so nice of you! I would just feel more secure if I kept 2 of the firewood with me while you are out though, just in case of emergency. You wouldn't need it just for the few hours you would be gone. '
Example Output:
Yes