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.

Example Input: Context: 'Hi how are you today? ' 'am fine and you?' 'I am good. Do you have any preferences on which items you would like most?'
Utterance: 'yes i really need a high amount of water and food.i have firewood in excess'
Example Output: Yes

Example Input: Context: 'Hmm okay, I am willing to give you three waters! I was hoping to get 3 firewood though, as it's going to be really cold where I am going.' 'seems like we have same priority items. firewood. I also need firewood most because I am prone to pneumonia ' 'Oh no, I'm so sorry to hear that ☹️ Let me ask about the food first then, would you be willing to give me the 3 packages of that? I am going to have a lot of people with me and we won't be near any stores at all.'
Utterance: 'if i give you all the food items, will you give me the firewood?'
Example Output: No

Example Input: Context: 
Utterance: 'hi how are you'
Example Output:
No