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: 
Utterance: 'Hello. I really just need firewood for my wife and daughter and some extra water for myself.'
[A]: Yes


[Q]: Context: 'I'm going to need some extra wood because I'm somewhat injured and can't really gather more.' 'Oh, I see. Well, I personally need lots of water to stay hydrated since I drank a lot already.' 'Yes, that's important. I don't need much.'
Utterance: 'The thing I need less, but still sort of want some of, is food.'
[A]: Yes


[Q]: Context: 'Oh that's cool! I will be camping with my 4 children so having a little extra would be great for me too.' 'Ok great! Do you need firewood?' 'I could use a little to cook with, But food is my main concern. Is it hot where you will be? '
Utterance: 'Ya so I could use a lot of water! Would you be willing for me to take one food two water and two firewood? '
[A]:
Yes