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: 'How are you today? Did you have any preferences on the supplies we will be trading?' 'I am good. How about yourself? I think I would like some firewood to start off with. We like to have bigger fires. What about you?' 'I am good as well. That is good to hear that you like to have bigger fires as we do not care much for that. We would much rather have some extra water.'
Utterance: 'Water is a little important to us too though , if possible maybe we can split that or maybe we can get some more food in replacement.'

Output: No


Input: Consider Input: Context: 'okay friend you can have 3 firewood and 3 water is that good enough?' 'I am going to need some food of course. ' 'yes ofcourse i agree with you.my dear friend will you have 1 food 3 firewood and 3 water'
Utterance: 'I would prefer 2 food and less firewood. There is tons of firewood where I am but there is no lake so I can't fish. No berries around here either. It's pretty scarce'

Output: Yes


Input: Consider Input: Context: 'Ok, what would you counter offer with?' 'I would like all 3 packages of firewood and 1 package of food. You can have the rest.' 'Well, I would like at least one firewood, it is the thing I most need.'
Utterance: 'But you need firewood for leisure, whereas I need firewood for survival.'


Output: No