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: 
Utterance: '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.  🙂🙂'
Example Output: Yes

Example Input: Context: 'Hi there, how are you doing?' 'I am great. Excited to go camping. How much food do you need?' 'I could use some extra food, I'll be hosting a get-together at my campsite later and will need some to entertain the guests. I'd like 2.'
Utterance: 'That is fine. I can go fishing to get some extra food but I would still like one. Can I take two packages of firewood so I can cook them? '
Example Output: Yes

Example Input: Context: 'Hello. Wow! That does not sound good. My sister just called and let me know she will be coming tonight. She is bringing food so i have plenty to share. 🙂' 'That's some good news. 🙂 Are you sure she is going to be bringing food with her?' 'Yea She is bring tons of food. So don't worry we have plenty of food to spare. 🙂 She did forget to get water. I didn't know she was coming so i didn't grab any and I forgot the 3 packages of water for myself at the store. ☹️'
Utterance: 'Yikes, that's not good. Water is very important, especially if you now have to take care of two people at your campsite now. I do have 3 packages of water but I don't think I can spare it all.'
Example Output:
No

