TASK DEFINITION: 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.
PROBLEM: Context: 'hello how are you?  I need the food the most because I ran off and left mine sitting on my kitchen counter.  I think we can agree upon you having 2 water but I need 2 food' 'I'm going hiking, and I really need food, it works up an appetite.' 'Well I didn''t bring any with me so I really need two.  I am willing to give you 2 waters.🙂'
Utterance: 'I also need the water, because it's not safe to drink from streams here.  '

SOLUTION: Yes

PROBLEM: Context: 
Utterance: 'I have a medical condition that causes my veins to close up when I get too cold. I will thus need the 3 firewood.'

SOLUTION: Yes

PROBLEM: Context: 'my item is food too.' 'Ok, other than food I could use some firewood. Maybe you could take 2 food and I could take 2 firewood?' 'sure, but i will get what then?'
Utterance: 'How about you take 2 food, 1 firewood, and 1 water?'

SOLUTION:
No

