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.

Context: 'Okay then shall I take 2 packages of food and all the packages of water?' 'Yes, and I'll get 1 package of food and all of the firewood.' 'Okay I think this might be a good deal. '
Utterance: 'Actually, I've just thought about it and I'd also like one package of water. I think it'd be fair being that you're getting 2 packages of food.'
Yes
In this case, the speaker gives a rationale for why they want to take another package of water. They say that it would be fair because the other person is getting two packages of food. This shows a personal need for water and therefore uses the self-need strategy. Since the utterance in this case does use the self-need strategy, the answer is Yes..