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.

Input: Consider Input: Context: 'That's good to hear, you always have to be careful with wild water though, it has all kind of germs. Sounds like you'll have plenty of dry firewood though. ' 'Yes, I would be willing to let you have all the firewood for 2 of the cases of water.  How much food were you needing?' 'I like your water and firewood arrangement. Can I have 2 of the food since you're getting 2 of the water? '
Utterance: 'Let me think on that. I know there won't be much for berries or small animals to hunt for.  Is where you are going have much available for you to hunt and scavenge for?'

Output: Yes


Input: Consider Input: Context: 'I will get two packages of food and you will receive one. I will get one jug of water and you will receive two. I will get one bundle of firewood and you will receive two.' 'Perfect. It has been a pleasure negotiating!' 'Yes, it has been a pleasure 🙂'
Utterance: '🙂 I hope you enjoy the rest of your day!'

Output: No


Input: Consider Input: Context: 'okay. 3 pack of water 2 pack of water and 1 pack of fire wood for mine. deal??' 'wait man i need 1 fire wood i give 1 water to you i must need 1 fire wood' 'Are you mad. what can i do with out water..'
Utterance: 'You have some this is extra'


Output: No