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.

Ex Input:
Context: 'How about I get 3 firewood, and you get 2 food AND water? We both win with that, I think.' 'So now you need 3 firewood with 1 food. Am I correct?🙂' 'Yes, that sounds fair to me. Although I would be willing to take a water if you're offering it, I am not quite as lucky with water. ☹️'
Utterance: 'How It will be. you already told that, you have lot of food with you. So can you please think how it will be. you can take all 3 firewood with 1 water and I will take all 3 foods packages and 2 water.'

Ex Output:
Yes


Ex Input:
Context: 'Water if very important to me as well. I'm on a medication where I get dehydrated very quickly and I need to make sure that I'm properly hydrated at all times. ' 'Well that is going to be a problem then because I have a medical condition too. How can we meet in the middle? I get 2 water, 2 food and no firewood?' 'I really need that water. I'm going camping in the desert where firewood will be vital for me as well. How about I take 2 water, 2 firewood and you get 1 water, 1 firewood and all the extra food?'
Utterance: 'That works. Deal🙂'

Ex Output:
No


Ex Input:
Context: 'Ok, what would you counter offer with?' 'I would like all 3 packages of firewood and 1 package of food. You can have the rest.' 'Well, I would like at least one firewood, it is the thing I most need.'
Utterance: 'But you need firewood for leisure, whereas I need firewood for survival.'

Ex Output:

Yes