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.

Ex Input:
Context: 'Perfect!  I'm a northerner, so the firewood is all yours!  I'll need lot's of water to keep hydrated after the hike, and I'll probably be pretty hungry too.' 'My spouse calls me a water buffalo so I'm pretty water dependent if you couldn't tell.  ' 'That's good.  Best way to stay healthy is with water.  How about you take 1 water and all the firewood?'
Utterance: 'I need at least one ration of food.  Would it be ok with me:  3 firewood and 1 each of food and water.  If you are ok with that, I am too.'

Ex Output:
No


Ex Input:
Context: 'Okay. I'm willing to give in on the firewood, but I really can't give in on the water or the food. As a diabetic I have to put my health first. ' 'I can give out the food in exchange for the firewood' 'Okay. I need all of the water, if you're getting the firewood. '
Utterance: 'I can't give out all the water. I need to be hydrated as well. '

Ex Output:
Yes


Ex Input:
Context: 'Hey there, unfortunately, I'm in a bit of a quandary with firewood too, as I am going to a place where it's fairly cold and will need more for heat. ' 'thats terrible! i broke my leg and wont be able to collect my own firewood , could i maybe get 2 packages? ☹️' 'Terribly sorry to hear that; it sounds like you won't be able to camp much in that condition. I assume you have someone coming along to help you because of your leg?'
Utterance: 'just a bunch of children under 5 who wont be able to gather firewood. so i desperately need at least 2'

Ex Output:

Yes