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: 'yeah we got a lot of things planned for them at the campgrounds. they're going to be pretty busy' 'So what is your main focus this trip?' 'one of my kids is on medication so we are going to need to pack a lot of water. so if could spare that it would be appreciated.'
Utterance: 'Well sadly I plan to go hiking a lot so I will need lots of water, but perhaps we can come to a reasonable agreement if I have to shorten my hikes.'
A: 
Yes