Q: 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: 'no i need firewood to always keep myself warm.' 'So do I, I have health issues.  I can give you one firewood, if I get all the food. ' 'why can't i get 2 firewoods?.......i'm an ulcer patient i need more than enough food to keep fit''
Utterance: 'It will be a strain, but I can give you 2 firewood if I get all the food and two water.'
A:
No