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 Input:
Context: 
Utterance: 'Hi! I'm really hoping to get a lot of water. I love outdoor activities like hiking and kayaking so I'll need to stay hydrated on the trip.'

Ex Output:
Yes


Ex Input:
Context: 'I really need food too, but I am willing to deal and let my kids go hungry I guess ☹️ I propose I get one food, 3 firewood and 1 water.  ' 'Will you please give me one firewood? I may run out of what i have. Just one.' 'I think I will need all the firewood since you are taking 2 foods. I will need to hunt and cook food from the land meaning I need my fire going all the time.'
Utterance: 'I need one more to light a fire to scare away animals. Please😮'

Ex Output:
Yes


Ex Input:
Context: 'most does not mean i have to neglect the rest, anyways either a) I get 3 water, 2 food and 0 firewood or b) I get 1 water, 2 food and 2 firewood' 'That is simply unacceptable.' 'well how about i get 2 water, 2 food and 1 firewood'
Utterance: 'Here is the offer.  For you: 3 water 0 food 1 firewood'

Ex Output:

No