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: 'How many family members do you have? ' 'Me, my wife and our two kids.' 'I could use 1 package of firewood if your family has other heating options like a butane food cooker.'
Utterance: 'I'm sorry, we really don't have any other options. I could really use 3 packages of firewood--I just can't risk a cold weather injury. Plus I promised everyone we'd be doing things the old fashioned way.'
A: 
Yes