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.

[Q]: Context: 'Yes, they say it supposed to be really hot the next few days.' 'yes, how do you suggest we share these resources?' 'Tell me, how stocked up are you on food and firewood?'
Utterance: 'I have firewood, what I need mainly is water, then food'
[A]: No


[Q]: 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?'
[A]: Yes


[Q]: Context: 'Hello, how are you? Looking forward to camping?' 'Oh yeah, that's for sure. What camping item do you prioritize?' 'I'm going to need some extra wood because I'm somewhat injured and can't really gather more.'
Utterance: 'Oh, I see. Well, I personally need lots of water to stay hydrated since I drank a lot already.'
[A]:
Yes