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.

Example 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'
Example Output: Yes

Example Input: Context: 'I would like 3 firewood, and 2 food. You can have 1 food and all of the water.' 'oh okay I will send you what are the materials you have' 'I already have a good supply of fresh water from the lake I will be camping by, and can hunt for some food but not all. What are you in need of?'
Utterance: 'oh that's great, what type of quality you have from us'
Example Output: No

Example Input: Context: 'Hello, how is your camping trip going?'
Utterance: 'Hi there. Hoping it'll be good, and yours as well. I was hoping we could negotiate so I could get this extra water - I was planning on this being a hiking trip and it's pretty warm and humid out, so I imagine I'll need it.'
Example Output:
Yes