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.

Input: Consider Input: Context: 'ok, fair enough. How about I take 2 firewood as 1 should do you for a couple nights. I also have small children with me and would like to have the fire burning at all times to keep the bugs away. ' 'I really dont see giving up that much of the wood as I cannot risk running out myself. We are camping way too far out to get access to additonal lighting. I tell you what if you will let me have 2 of the fire wood I would be willing to give you two of the food items. I know that racoon probably took your food as well!!' 'Okay that is a deal. I would like 3 water as well because my campsite water is very dirty. I would like to have bottled water to take my medicine with and we forgot to pack it.'
Utterance: 'I may consider 2 waters as we are going to be hiking up the tallest mountain in North Carolina and they say temps may reach 100, I must have some have at minimum of 1 package of water.'

Output: Yes

Input: Consider Input: Context: 'I am just concerned that only 1 firewood might make it so I'm too cold to function. ' 'If you boil the water above the fire, it will provide additional heat over time. You would also be able to make tea, which would warm you up from the inside as well, better than any fire would. That would probably be most beneficial to you. I really do need the 2 firewood if there's any chance of making a bonfire for my party.' 'I am allergic to tea and coffee. I wonder if the smaller fire would be more quaint for everyone to sit around. '
Utterance: 'It really wouldn't do the job that well at all. You could always prepare hot cocoa or use your share of the food to make a warm stew. I really do need at least the two firewood and a couple of food. You can have all the water to make a hearty and hot stew to get your through the night, though.'

Output: No

Input: Consider Input: Context: 'I like to have a lot of food to keep my energy up, but I might need some firewood to cook that food. I can't wait for my camping trip.🙂' 'I love camping also! Yes, I can see how you would need firewood if you want to cook your food. So, food is more important to you than water?' 'Yes, I will need a little water to wash that food down with though. Are you going to be needing a lot of water?'
Utterance: 'Yes, I may need more water. I am on a diet and I don't really cook either! Hopefully we can work something out here.'
Output: Yes