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: 'Like i said food is my top priority so i will not do well with less than 2.' 'Then you get two food and no firewood here.😮' 'You mean you can't let up one firewood for me?'
Utterance: 'Not this time, I really need all the firewood and food is a large need for my family of 8. We need the firewood to cook all our meals from the animals we hunt since we are short on food.'

Output: Yes


Input: Consider Input: Context: 'Great so we are on the same page. Ill take two fire wood, one water, and one food.' 'Okay! Then it's a deal! 🙂' 'Ok you will get one fire wood, two waters, and two foods'
Utterance: 'Yes! That is correct! 🙂'

Output: No


Input: Consider Input: Context: 'Ooh what kind of food?! Like MRE? I'm going to need lots of water because I'm going to the High Desert.' 'Hello! camper, how are you? I need us to make a deal where we all benefit.' 'Yes, I expect that! You need food most and I need water, so let's propose an exact trade? 3 for 3?'
Utterance: 'My main objective for the camp is food and firewood, since I have a large family and the amount of food they give in the camp is very small for all my family and my wife and I have to cook with firewood in the camp.'


Output: Yes