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.

Input: Consider Input: Context: 'Food is of the highest preference for me! I am a diabetic and always need to be able to eat if I'm experiencing a low! How about you?' 'Food is also my highest preference, followed by firewood, with water being the lowest. I don't have a medical condition that needs food so I can give you 2 units if I can have 1?' 'That would be great if you could! '
Utterance: 'I can do that! What's your next highest priority? I would prefer 2 firewood as I need to be warm at all times and plan to camp in the cooler weather'

Output: Yes


Input: Consider Input: Context: 'Hello there.' 'hi'
Utterance: 'So I plan to go hiking a lot this trip and I would appreciate a majority of the water and firewood if possible.'

Output: Yes


Input: Consider Input: Context: 'That's true. We both deserve a good trip. Why do you need more food?' 'Because I planned to go hiking and it wouldn't leave me time to chop much of any myself.  Even if I did, I'd have to carry it back and that's obviously not very smart in this heat.  But if I had the extra food, I'd be willing to inconvenience myself with getting firewood and cutting my hike a little short because I know the firewood is important to you.' 'You're right. I do not plan on hiking so you need more food than me. If I am correct, would I get 3 firewood/1 food while you get 3 water/2 food?'
Utterance: 'That's what I could live with, yes.'


Output: Yes