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 Q]: Context: 
Utterance: 'It's been so cold these last few days, I'm worried that I didn't bring enough wood for the next few nights.'
[EX A]: Yes

[EX Q]: Context: 'Hi, what is your highest priority item?'
Utterance: 'I would love to have extra food for my trip, bringing the family! how about you?'
[EX A]: Yes

[EX Q]: Context: 'Hello, I'm excited for our camping trip!' 'Hey buddy, yes I'm so pumped for it.'
Utterance: 'Okay so I'm planning this super cool backpacking expedition up the waterfall but I'm going to need all the additional water and food for everyone.'
[EX A]:
Yes