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: 'Well it's important for both of us to get that wood ! ' 'In order to get all food, can you give me additional firewood?' 'How about I do: 2 firewood, 2 food and 1 water?'
Utterance: 'Well, what would it take for you to give up extra wood? '

Output: No


Input: Consider Input: Context: 'not soo good, i am hungry' 'Uh oh. What are you preferences on supplies?' 'food, then water, then firewood, and yours?'
Utterance: 'water, food then firewood. It's really hot so I need to make sure we are hydrated. We forgot a bag of supplies that had mostly food so we really could use food. It's hot so firewood isn't necessary. If anything we can get it from around or on a hike.'

Output: Yes


Input: Consider Input: Context: 'I would really like some extra firewood to keep the chill off on those cold  nights.🙂'
Utterance: 'Me too. It has been rather cold lately! But I am also really interested in water.'


Output: Yes