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: 'We will have 50 adults with us. How about 2 firewood, 1 food, 1 water for you?🙂' 'lots of work for the both of us, at least you will have lots of help on you end. I accept the 2 firewood specially if you have elderly with you. will you be okay if give me 2 foods? ' 'True, 2 firewood and 2 food for you and I'll take 3 waters.'
Utterance: 'that sounds perfect! thank you so much for understand and wish me luck with all of the little rascals im taking. to verify, I will be taking 2 FW, 2 Foods and 0 waters'
Example Output: No

Example Input: Context: 'The basics of man -  food and water' 'Ah, okay, I could use some of that too! Which one do you need most?' 'water. How about you?'
Utterance: 'I could use water, too, but I'd be willing to give some up if you give me more items overall'
Example Output: Yes

Example Input: Context: 
Utterance: 'I need the firewood and the food, you can have all the water.'
Example Output:
No