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: 'Yes definitely! It is a pain for sure, but I love camping so I still want to go! I just have to make sure I have all the supplies I need. ' 'I can do without extra water as long as I have food and firewood to purify water I find.  It might be better for you to have a reliable supply though.' 'That totally makes sense! I actually am good on firewood thankfully, I got some from a person selling it from their yard a little bit ago.'
Utterance: 'I would have been able to bring more with me by getting some from my parents, but my father decided he wanted to get rid of what he had left and so has been enjoying his fire pit a lot lately.'
Example Output: Yes

Example Input: Context: 'I would give you all of the additional food if you gave me all of the additional water. ' 'That sounds like a deal' 'Shall we divide the firewood two to one? '
Utterance: 'sure as long as I am getting two wood.   It gets very cold at night where I go camping'
Example Output: Yes

Example Input: Context: 'Yes the cold is hard to adjust to I can't seem to shake the chill.' 'I could really use some extra firewood!' 'So could I. How about we split the firewood?'
Utterance: 'How about I take 2 firewood but you can have 2 waters? Water is pretty important and I have a little extra.'
Example Output:
No