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.

[Q]: Context: 'what i mean by prevention of excess is that we should focus on getting excess and not to limit it regardless of what we already have because if we should offer some creative approaches by excess. we can both come to an agreement if you are interested.' 'Okay. Lets just try to do some negotiation. I am the most interested in getting more WATER. The water I already have at the campsite looks dirty so, if it is okay with you, I would like all THREE of them. My food has also been stolen by bears and I don't make much left, so I would like TWO of the food items. You can have all the firewood and the other food item. How does that sound? 🙂' '😮Sound good enough but since you know i can not do without having anything to sustain me whenever i am thirsty then i suggest you are free to take TWO of the water and since your food has also been stolen by bears and you don't make much left, then you can have the TWO of the food items too and leave the THREE firewood for me with ONE food. How does that sound? 🙂'
Utterance: 'I think we are getting very close to a good deal. Would you be willing to give me ONE firewood in case the stuff I have gets wet?'
[A]: Yes


[Q]: Context: 'Hello there, I'm in a lot of need for some firewood! I'd not be against taking most of it if that's alright?' 'Hi, I need the all food package. I will frequently feel hungry'
Utterance: 'I can give you two of the packages if you're willing to give me all 3 of the firewood. I left mine out in the rain a couple of nights ago so its all ruined.'
[A]: Yes


[Q]: Context: 'Yes definitely! It is a pain for sure, but I love camping so I still want to go! I just have to make sure I have all the supplies I need. ' 'I can do without extra water as long as I have food and firewood to purify water I find.  It might be better for you to have a reliable supply though.' 'That totally makes sense! I actually am good on firewood thankfully, I got some from a person selling it from their yard a little bit ago.'
Utterance: 'I would have been able to bring more with me by getting some from my parents, but my father decided he wanted to get rid of what he had left and so has been enjoying his fire pit a lot lately.'
[A]:
Yes