Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Context: 'i understand my friend but in my group some sick peoples are there they take medicine so i need water is necessary. please help me friend ' 'well we need water to live, would  you be willing to part with some extra firewood or a meal to make up for the water' 'we also need this friend. i have kid and sick person that's why i ask this help please help me friend'
Utterance: 'i willing to swap some items for others, but we have to work togeather on it'
Student:
No