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: 'i willing to swap some items for others, but we have to work togeather on it' 'ok friend how this deal 2 pack of all.?' 'two pack to who you or me?'
Utterance: 'for me. 2 pack of water 2 pack of fire wood and 2 pack of food. '
Example Output: No

Example Input: Context: 'I'm fine, let's talk about how we can come to a fair deal.' 'Sure, my number one item if food if you can spare any.' 'It'd be nice if we can both get an even split right?'
Utterance: 'Well some needs are higher than others. I need more food but I can give up some firewood or water.'
Example Output: No

Example Input: Context: 'All the food is too much, I would need at least one package of the food for my group. I was thinking you could have 2 of the food packages and I have 1, then I get all the water and the majority of the firewood. That leaves you with 2 of the high priority food packages and a package of firewood to cook the food.' 'That seems quite unfair. I really would like my camping trip to be enjoyable.' 'I understand. What part of the deal is unfair to you? You get the majority of the highest priority item (food) and I get the majority of the lower priority items (water and firewood).'
Utterance: 'I will have my two packages of food and only one package of firewood. I do not think I can make one package of firewood last for both of my food. '
Example Output:
Yes