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: 'There is no point in walk away. This deal should be done mutually and beneficial for both. So its better I will take 2 food packages, you can take 1 food package, 2 water and 3 fire wood .Hope this will definitely work for you.' 'No i absolutely need 2 food packages and 1 water. How about we do it like this... You take 1 food package, 2 waters and 2 firewoods. Does that work for you?' 'Sorry to bother you, I don't need anything other than food package. So better you could give me 2 food package and take 3 water and fire wood. Please consider this deal.'
Utterance: 'No i absolutely need 2 food packages. So if you cannot agree to take 1 food 2 water and 2 firewood i will walk away.  If you have children with you would would also need water which you are not asking for. '
Example Output: Yes

Example Input: Context: 'I'm good as well, trying to plan my camping trip for the weekend. Do you enjoy camping?' 'I do but it's hotter than I expected. Probably gonna drink a lot of water.' 'It pretty cool where I live so I don't need many water. But I do need a lot of food and firewood. Have a huge family and we do a lot of grilling. '
Utterance: 'I would give you all the wood if I could have all of the water.'
Example Output: No

Example Input: Context: 'That sounds good to me. 🙂 I think we can make a good deal.' 'I can give you 3 wood packages if I can get 3 water and 2 food. So you will receive 3 wood and 1 food. What do you think?' 'I would like 2 wood, 1 water and 1 food. You would get 1 wood, 2 water and 2 food.'
Utterance: 'I don't need any wood. Do you have any alternatives?'
Example Output:
No