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: 'hi' 'Looking forward to camping' 'same, i love to camp'
Utterance: 'What do you need most when camping? I hate splitting wood, so  I need firewood'
Example Output: Yes

Example Input: Context: 'I need   food and water the most . There are 3 of us.🙂' 'Your most needed item is water or food?' 'Most needed is both food and water. I guess food is my highest priority .🙂'
Utterance: 'Ok perfect, the item I need the most is water because I need to hydrate.  What do you think if I give you 2 food and I keep 2 of water. '
Example Output: Yes

Example Input: Context: 'Hi, it is nice to be going camping. I do not have a very good sleeping bag and I can get cold at night. It would be nice to have extra firewood. I dont eat much so I do not need much extra food. Would you be willing to give me two packages of firewood for a package of food?'
Utterance: 'I enjoy camping as well. However, my campsite seems to be a bit chilly at night. I'd be willing to part with some firewood, yet I'd need quite a bit of food to compensate. I also have a stream nearby so water is plentiful if you need that as well.'
Example Output:
Yes