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 Q]: Context:
Utterance: 'Hello, what is your preference for supplies? I would prefer to have as much extra firewood as possible, but am relatively indifferent to the rest.'
[EX A]: Yes

[EX Q]: Context: 'I really need food too, but I am willing to deal and let my kids go hungry I guess ☹️ I propose I get one food, 3 firewood and 1 water. ' 'Will you please give me one firewood? I may run out of what i have. Just one.' 'I think I will need all the firewood since you are taking 2 foods. I will need to hunt and cook food from the land meaning I need my fire going all the time.'
Utterance: 'I need one more to light a fire to scare away animals. Please😮'
[EX A]: Yes

[EX Q]: Context: 'How about you take all the firewood because I have the skills necessary to chop down more. I also will need three packages of food because I will be climbing a very tall mountain.' 'well i do need alot of firewood since i need it to start a fire' 'Okay, so you can take all the firewood and I take all the food. I will also need at least two waters because I had a limited supply at home.🙂'
Utterance: 'no, i will need 2 water because i need to drink it and there not much water around me'
[EX A]:
Yes