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: 'I will need 2 firewood, 2 water and 1 food'
Utterance: 'How about you take all the firewood because I have the skills necessary to chop down more. I also will need three packages of food because I will be climbing a very tall mountain.'

SOLUTION: Yes

PROBLEM: Context: 'Hello, I would really like to get most of the water and firewood packages.'
Utterance: 'You can have most of the water and firewood if I can have most of the food. I would like to get two of the firewood so I have a nice fire to come back to after searching for a source of water.'

SOLUTION: Yes

PROBLEM: Context: 'Hello, what do you need the most for your camping trip?' 'ideally some firewood, it got soaked due to me being caught in the rain. what do you need the most?'
Utterance: 'I also need more firewood.  I thought I would be able to find enough around the campsite but I guess that rain got us both 😮'

SOLUTION:
Yes