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: 'I have a medical condition that causes my veins to close up when I get too cold. I will thus need the 3 firewood.'
[A]: Yes


[Q]: Context: 'Hi, I need the all food package. I will frequently feel hungry' 'I can give you two of the packages if you're willing to give me all 3 of the firewood. I left mine out in the rain a couple of nights ago so its all ruined.' 'If I will give 2 firewood for you and I will take all the food package with 2 water.'
Utterance: 'I need all 3 firewood! But I'm willing to discuss food with you. I have a lot of that.'
[A]: No


[Q]: Context: 'I was actually saying you get 2 firewood and I get 3 waters. Then you could have 2 food and I get 1 food.' 'That's seems fair to me since we all need food to eat' 'Okay, I'm glad we were able to work something out!'
Utterance: 'Am also glad.You are more interested in water. Do you drink a lot of water frequently?'
[A]:
No