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: 'So 1 firewood, 0 food and 3 water for you?' 'No 3 packages of firewood, 1 package of water, and I can give you 3 packages of food.  I need the Firewood the most.' 'Tell me why you need so much firewood?'
Utterance: 'I have other people coming with me and we don't have insulated sleeping bags.  The temperature also drops drastically at night.'
Example Output: Yes

Example Input: Context: 'Good afternoon, how are doing today? Let's get this thing going. What items are you most interested?'
Utterance: 'Hello , i am well. i dont need much so i would say an equal amount.'
Example Output: No

Example Input: Context: 'Sorry, that won't work for me. I've already said that I have a medical condition that requires additional water. You do not need that much water just to be hydrated -- you already have basic water. I can give you all of the firewood, but I need all of the water. ' 'In that case I exchange all the water only for all your firewood' 'I can give you all the firewood - but as a diabetic, I still need at least one extra package of food for my blood sugar levels. So, as my final offer I can give you all of the firewood, and two extra packages of food. Do you agree to these terms?'
Utterance: 'No, I give out only one extra package of food'
Example Output:
No