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: 'Can you spare some water? I need to take medication and I have run out.'

Ex Output:
Yes


Ex Input:
Context: 'hello' 'Hello, what would you like for the packages?'
Utterance: 'we are cold and hungry so we need firewood and food the most, what about you?'

Ex Output:
Yes


Ex Input:
Context: 'Hey there, how's it going?'
Utterance: 'It's going good! Just making the final plans for my camping trip this weekend. What about you?'

Ex Output:

No