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: 'Hello! I'm so excited for this camping trip. What do you still need as your supplies?'
Utterance: 'I think food, water, and firewood are all going to be fairly important.'

Output: Yes


Input: Consider Input: Context: 'Tell me about it!  With this pandemic it seems like all days are Mondays 🙂' 'Too true! Anyways, what is the item that you prefer the most for this camping adventure? 🙂' 'Firewood, how about you?'
Utterance: 'Oh, firewood as well! It's not a camping trip if you run out of firewood in just a few nights! I would hate to be cold '

Output: Yes


Input: Consider Input: Context: 'No, I have all of my children here with me, they are all afraid of the dark so must burn the fire all night, as I brought no additional source of lighting.' 'ok, fair enough.  How about I take 2 firewood as 1 should do you for a couple nights. I also have small children with me and would like to have the fire burning at all times to keep the bugs away. ' 'I really dont see giving up that much of the wood as I cannot risk running out myself. We are camping way too far out to get access to additonal lighting. I tell you what if you will let me have 2 of the fire wood I would be willing to give you two of the food items. I know that racoon probably took your food as well!!'
Utterance: 'Okay that is a deal. I would like 3 water as well because my campsite water is very dirty. I would like to have bottled water to take my medicine with and we forgot to pack it.'


Output: Yes