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 am sooooo excited too! I can't wait to sit by the fire! 🙂' 'Me too!!!! That is what I am most excited about. I was actually hoping you might have some firewood to spare?' 'Gosh, that's a bg favor because I need the firewood. I will give you all of the firewood if you will give me all of the food. How's that?'
Utterance: 'Fair enough! Thank you! I would really appreciate any extra water that you have too?'
Example Output: No

Example Input: Context: 'I am going camping too. May I ask where you are going canoe camping?' 'We are going to camp in Oregon. We are looking forward to it. The views and scenery should be gorgeous. How about you?' 'I am going to the Allegheny mountains in Pennsylvania. I'm going to be hiking a lot so I will need some extra food. Let's balance out the food and water somehow....'
Utterance: 'Sounds good. We will also be hiking a bunch and I have little kids who go through water and food like crazy.'
Example Output: No

Example Input: Context: 'Hello my friend! Are you ready to go camping?' 'Getting there, just need some more supplies to be safe.'
Utterance: 'Got you! I really need firewood to make smores and I don't think we have enough to last the whole night!'
Example Output:
Yes