instruction:
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.
question:
Context: 'Hi, how are you, ready for the big camping trip?!' 'Yep.  I am excited.  I could really use the decompression and time away from society. ' 'I agree, can't wait to unplug. As far as supplies go, I think its going to be hot and sunny where I'm going, wouldn't mind a bunch of extra water.'
Utterance: 'Water is extremely important to me too.  I can give you 2 waters if you give me all 3 firewoods. '
answer:
Yes


question:
Context: 
Utterance: 'Hello. I really just need firewood for my wife and daughter and some extra water for myself.'
answer:
Yes


question:
Context: 'well, I run and could use some extra water. How about you?' 'That's a good reason! I don't run, but could use some water. ' 'How much were you thinking? I could also use some food, but really don't have much need for firewood.'
Utterance: 'How about we split? 2 water for you, and 1 for us, that way we can go on a fun hike. In exchange, could we also have all the firewood? We want to have a community fire and you're more than welcome!'
answer:

No