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: 'hello'
Utterance: 'Hi'

Ex Output:
No


Ex Input:
Context: 'Hello, I would like 3 water and 3 firewood packages. You can have 3 food packages.' 'Hello, i need 2 water , 1 food and 1 firewood packages'
Utterance: 'I need prefer water the most since my mouth is dry a lot. I need 3 water, 1 firewood ,and 0 food packages'

Ex Output:
Yes


Ex Input:
Context: 'I would need at least 1 food. ' 'I could give you one food, but I would need to have 2 waters to make my food last by making soup.' 'How about I get 2 waters and 3 firewood?'
Utterance: 'I think I can give you two waters, and 2 firewood.'

Ex Output:

No