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.

[EX Q]: Context: 'In Arizona, so I know it'll be hot. How about you? ' 'Same! At least, I won't need firewood, because it will be so hot. I'm very worried about the water situation though. It's just going to be me out there and the only fresh water is at the base of the canyon, and that's a really long and dangerous hike down for one person.' 'Well, if you give me 2 firewood and 2 food I will take just one water and you can have 2. I don't want you getting hurt!'
Utterance: 'That could work, but if possible I would like a little more food then, in case I do need to hike to the stream on the last day. I only have a couple of traps with me and those can be unreliable for food. Would it be ok if I take 2 water, 2 food, and 1 firewood?'
[EX A]: Yes

[EX Q]: Context: 'I am ready to give 1 amount of food for you. But I want some quantity of water and firewood for me.' 'I would take 3 packages of food and just 1 package of water. Is it okay for you?' 'No, I don't take this. Because food is important for my child and me.'
Utterance: 'Try to understand our situation. We had food a week back. We were drinking only water for the whole week. We are dying of hunger. Kindly understand our situation.'
[EX A]: Yes

[EX Q]: Context: 'That would be amazing! So I could take all 3 packages of the food and you could have all 3 packages of the water. Now, we just need to split the firewood. Could I take 2 of the firewood leaving you with 1? I think I would need more for cooking the food. ' 'Awesome! That does sound like a deal. I wish we had more firewood to split because I am afraid it might get cold.' 'I agree. I am feeling generous and I did buy a new axe for this camping trip. So, I could stick to the prior agreement and just work a little harder to find some dry trees to chop.'
Utterance: 'I appreciate your generosity 🙂 I think that bringing your axe would be a great idea! Also be sure to pack warm clothes and extra blankets! I'm sure we will both be fine'
[EX A]:
No