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.
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Question: Context: 'The basics of man -  food and water' 'Ah, okay, I could use some of that too! Which one do you need most?' 'water. How about you?'
Utterance: 'I could use water, too, but I'd be willing to give some up if you give me more items overall'

Answer: Yes


Question: Context: 'It's been so cold these last few days, I'm worried that I didn't bring enough wood for the next few nights.' 'That is unfortunate. How about I give you are my firewood for all your food?'
Utterance: 'That is a very generous offer but I think I need to keep some food to be safe. Do you need any water?'

Answer: No


Question: Context: 'Hi, I really need water to stay hydrated during my camping trip because my food supplies are low. Do you have any to spare?' 'Hi.  I can't do that right now.' 'Is there anything that you might need? '
Utterance: 'I would be interested in firewood.  Can I ask you, what are your primary concerns on this trip?'

Answer:
No