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.
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Question: Context: 'He definitely does drink a lot of water, but he's in a growth spurt so 2 would be ideal. I'm happy to give up all firewood in exchange for the extra food!' 'okay that sounds like a better deal then! I will take all the firewood and 1 food, and you can take the 2 food packages' 'Awesome, I appreciate that. How does the water need look on your side?'
Utterance: 'I think having two waters would be good for me because my mom forget to pick extras up at the store yesterday😮'

Answer: Yes


Question: Context: 'Great, we can split the food, how are you on water?' 'That would be great. I need to have frequent small meals throughout the day so the extra food would help. I have plenty of water. ' 'alright, so I'll keep the water, and firewood, and give you 2 extra food.  Does that sound like a good deal?'
Utterance: 'I actually need one firewood and one food package. I can give you one water. '

Answer: Yes


Question: Context: 'how about I give you 2 waters and 1 food package in exchange for all your firewood?'
Utterance: 'I'm afraid that will not work for me. I have hypothyroidism, so I am intolerant to cold temperatures. I was also planning on taking a swim in the river. I would prefer to take two firewood & one food package, & you may have the three waters, two food packages, & one firewood.'

Answer:
Yes