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: 'i understand friend. i need 2 pack of water and 3 pack of food and 2 pack of fire wood. can you please help me ' 'No way can you have everything, I will need 3 packs of firewood 2 backs of water then you can have all the food' 'i have sicked people and kids so i must need food water fire wood. please help me friend'
Utterance: 'I am sick and have a large family if we cant cooperate together we all get nothing'
[EX A]: Yes

[EX Q]: Context: 'I dont need the firewood as much. ' 'That is great for me. I guess i will take all three.🙂' 'sure what other preferences would you like '
Utterance: 'I need a lot of water too. Thank you for understanding.'
[EX A]: Yes

[EX Q]: Context: 'i am giving you one firewood' 'That doesn't work for me. I propose you get 2 water and one firewood and 2 food.' 'so you would get 2 firewood, 1 water and 1 food'
Utterance: 'yes'
[EX A]:
No