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: 'Haha yup me too. I have a teenage son who eats about 5000 calories a day. Okay, I think the most fair option is one of takes 2 firewood and 1 of the other two items. I don't care who.' 'Sure. How about you take 2 firewood, and 1 food and 1 water?' 'That's fine with me. This should be a great weekend to get out.'
Utterance: 'yes sounds good! hope it doesn't rain'
Example Output: No

Example Input: Context: 'Hi! I was hoping to get 2 packages of firewood, 2 packages of water and 1 package of food and you can have the rest.' 'Hello. Is there a reason you prefer more water and firewood to food?'
Utterance: 'I get cold very easily and also get thirsty a lot. What are your preferences?'
Example Output: Yes

Example Input: Context: 'Since the lake is nearby enough, I think we'd be more interested in ensuring there's enough food for my people, I think 🙂' 'Hmm. I really need food too. I don't care much for water either. How about I take all 3 firewood, 2 food, and 1 water?' 'Yeah, that's not going to work for me.. I can give you two food if you really need it, but in exchange I'm going to need two of the water and all the firewood.  '
Utterance: 'I will just take 3 firewood, 1 food, and 1 water. That work for you?'
Example Output:
No