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: 
Utterance: 'Hi there! I can't wait to go camping! How about you?'
Example Output: No

Example Input: Context: 'Okay, so you can take all the firewood and I take all the food. I will also need at least two waters because I had a limited supply at home.🙂' 'no, i will need 2 water because i need to drink it and there not much water around me' 'Please work with me. I will need plenty water to make it to the top of the mountain.'
Utterance: 'i am already giving you all 3 food which i also need to eat'
Example Output: No

Example Input: Context: 'Hi there. Hope you too are looking forward to this much needed camping trip. What are your needs in terms of extra packages?' 'Since this is the first time for the family to be camping, having plenty of food for everyone is on the top of my list.' 'I am fine with you having the 3 foods. Is it okay if I have 3 water units We are fasting and need lots of hydration.'
Utterance: 'Are you sure you need all of the water? It would be nice to have some extra.'
Example Output:
Yes