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.

Input: Consider Input: Context: 'The trip is great, how about you?' 'It is great too. However i am feeling very cold i need a lot of firewood to light a fire.' 'We have -10 degrees temperatures at night where I am camping!!'
Utterance: 'It is even worse here and I am not feeling well'

Output: Yes


Input: Consider Input: Context: 'Firewood, how about you?' 'Oh, firewood as well! It's not a camping trip if you run out of firewood in just a few nights! I would hate to be cold ' 'I was thinking S’mores!  I will start off....2 firewood, 2 water, 1 food'
Utterance: 'I was thinking smores too! Well I can settle for 1 firewood, but I think I would need more food to keep busy. How about (for me to recieve): 1 firewood, 3 food, 1 water?'

Output: Yes


Input: Consider 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'


Output: Yes