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: 'do you want extra firewood if I take extra water?' 'At the least, Do you think I could get a little extra food if I give you some extra water as well?' 'yes, that would work for sure'
Utterance: 'Thats Good, I'm a big guy and like to eat when I'm out and about. '
A: 
Yes