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.

Context: 'I understand. We will have a big group (about 10 people) so we are trying to have as much water as possible as well. If anyone gets dehydrated it'd be the end of the trip and hard to get everyone back to base. What's the fewest amount of bottles you're willing to accept?' '😮Two packages is the lowest I would accept. There is one exception to that. If you were willing to give up 2 firewood, then I would be willing to take 1 water. I think I could trade some extra firewood for water at the campsite.' 'I understand. I am not willing to give up any firewood, but I'd be willing to do a trade of 1 food for 1 water. So 3 firewood for us, 1 water for us, and 1 food for us. '
Utterance: 'Sorry, that won't work for me. ☹️ My counteroffer is I will take three waters and two food packages and give you all of the firewood and 1 food. I am running out of time, and if we don't agree, we will both lose out, so please consider this last offer.🙂'
No