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: 'We have -10 degrees temperatures at night where I am camping!!' 'It is even worse here and I am not feeling well' 'I am just going to walk away from the deal,  my family can't freeze'
Utterance: 'You can take 1 firewood then'
Example Output: No

Example Input: Context: 'Hello, well I really need food. Have a lot of extra people.' 'Awesome - same, I also need a ton of food. Will firewood be of interest to you as well? I'll be happy to compensate in this way' 'Firewood is not overly interesting to me, but water is somewhat enticing.'
Utterance: 'Ok, great - I can give you all of my waters in exchange for a majority of the food and half of firewood'
Example Output: No

Example Input: Context: 'Hi, I'd like to take all of the food and 2 of fire wood. You can have the rest.'
Utterance: 'I really need food too so if I can have 2 packages of food you can have 1 package of firewood and all 3 of the water.'
Example Output:
Yes