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.

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. '
Yes

Context: 'I need more firewood to keep my food going.' 'I get it, in that case I'' take additional packages of food.' 'I don't think so, because I need additional packages of food in case there is an emergency.'
Utterance: 'I was under the impression you don't have the need for additional firewood as you mentioned you need additional of food and water. Let me know how many packages of item you need.'
No

Context: 'So if we were to split the firewood more in your favor and I were to take all the food, and then we kind of split the water, I think we could maybe make a deal here?  🙂' 'I think that is definitely doable! I'd be glad to make a deal with you. Thanks for being so reasonable! 🙂🙂' 'So I'm proposing 1 firewood to me, 2 to you.  3 food to me.  And 2 water to me, 1 to you.  Can we work with that?  Firewood seems to be important to the both of us so I'm giving up things here.'
Utterance: 'Yes I think that will work just fine. Firewood is important especially because I usually find my food in the woods.'

Yes