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: 'Hello 🙂' 'Hello!'
Utterance: 'Which item do you need the most?'
Example Output: No

Example Input: Context: 'No problem🙂, i would be fine with 1 water, 1 food,and 3 firewood.' 'That works for me. Glad we could hammer out a deal. 🙂 What are you using all the firewood for?' 'so just to be clear that 1 water 1 food and 2 firewoods, and probably have a bon fire.'
Utterance: 'Correct We will take 2 food, 2 water and 1 firewood. Very cool.'
Example Output: No

Example Input: Context: 'I would be willing to take 2 firewood, 3 food, and 1 water if that would work for you.  ' 'Hmm I think I should take 2 food, 1 firewood, and 3 water. What do you think?' 'Is your first priority the water?  I'm definitely willing to split up by what is most important to us both.'
Utterance: 'Food is actually my first priority but since it seems to be first priority for us both I thought we could split that. Water doesn't seem to be a priority for you so thought I could take that'
Example Output:
Yes