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: 'Sounds good.  We will also be hiking a bunch and I have little kids who go through water and food like crazy.' 'What if I get 2 food packages and 1 water package....and you would get 1 food package and 2 waters?' 'I think we will need more extra food than that.  How about the reverse, I get 2 food and 1 water and you get 1 food and 2 water.'
Utterance: 'I could do that if I could then get 2 packages of wood as well because it's been bitterly cold this time of year at night in the Alleghenies.'
Yes