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: 'Yes, and I'll get 1 package of food and all of the firewood.' 'Okay I think this might be a good deal. ' 'Actually, I've just thought about it and I'd also like one package of water. I think it'd be fair being that you're getting 2 packages of food.'
Utterance: 'Which means? Did you mean that I would take 2 packages of food and 2 packages of water? Then I will ask for one package of fire wood.'
Example Output: No

Example Input: Context: 'yes ofcourse i agree with you.my dear friend will you have 1 food 3 firewood and 3 water' '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' 'okay is 2 food 1 firewood okay for you while i get 1 food 2 firewood and 3 water'
Utterance: 'I'm going to need some water as well. How about 2 food, 2 water and 0 firewood for me?'
Example Output: Yes

Example Input: Context: 'HI. I'd love to get 2 additional packs of firewood. The weather forecast was for much warmer weather here and I just didn't bring enough with me. I also left my additional sweatshirt at home. I'd be happy to give you one additional water and two of food.  🙂🙂' 'Well I had a really great day fishing today and I would like to have some extra firewood so I can cook all of this fish.  How about I take the 3 packages of firewood and you can keep 2 additional food packages in return.' 'You really did have a good day didn't you! Sounds like fun. How many fish can one person eat? If I don't have the extra firewood I'm going to be really cold tonight. ☹️'
Utterance: 'I am here with my family and we love to eat fish.🙂  Maybe if you spend tonight sleeping in your car or camper I can keep the fire wood. In exchange I will give you the 2 additional food packages and all 3 of the water packages. It's only for 1 night.'
Example Output:
Yes