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 self-need strategy, otherwise output No. self-need is a selfish negotiation strategy. It is used to create a personal need for an item in the negotiation, such as by pointing out that the participant sweats a lot to show preference towards water packages.

Input: Consider Input: Context: 'Oh, that does change things a lot. Diabetes is a hard disease to have to deal with. So you want more firewood than water? And less food than water?' 'Well, I don't know.  I think I would like more water than firewood, but yes less food than water.  I'm a pretty easy going person though! 🙂' 'Ok, let me know what you think and we will go from there. I do prefer more food and firewood than water though.'
Utterance: 'Okay, it sounds like we are pretty agreeable here.  I will wait for you to make an offer if you would like to.'

Output: No


Input: Consider Input: Context: 'yes we should come to a fair deal, what are your priority items?' 'Food is highest, firewood is medium, and water lowest. You?' 'I have food, water and firewood.'
Utterance: 'Ok so whoever gets more wood should get something else higher'

Output: No


Input: Consider Input: Context: 'No they don't ☹️ She is starting to eat a few solid food items. So if I had some extra food that would help. I think if I had 2 waters, 2 food, and 1 firewood to be able to cook and keep things clean I would have enough. ' 'I can give you 2 waters, but I would need all the food because my group is bigger. You can have two firewood.' 'I would need at least 1 food. '
Utterance: 'I could give you one food, but I would need to have 2 waters to make my food last by making soup.'


Output: Yes