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: 'Yikes, that's not good. Water is very important, especially if you now have to take care of two people at your campsite now. I do have 3 packages of water but I don't think I can spare it all.' 'I tell you what if we trade 3 food for 3 waters! I think that would be fair snice you said you need some food and snice I need some water. 🙂' 'Well, I do have some food but if I trade you all 3 packages of water, I won't have any at all. How about 2 packages of water, so we each have 1 package, including your sister?'
Utterance: 'How about this it think it will work out better for us and you snice you need fire wood too. You get 3 food and 2 firewood and and I get 3 water and 1 firewood. 🙂🙂'
No

Context: 'Yeah, I want to make sure i am prepared. What do you think are the bests options?' 'Well i would really like to have extra firewood since i am afraid of the dark and i don't need extra water so i was hoping you would want to trade that' 'Yes, I think that sounds like a good option. I personally could use more food. I like to eat. '
Utterance: 'how do you propose we split the food then?'
No

Context: 'Well I will definitely need 2 packages of food and 2 of firewood for survival.' 'I am definitely ok with giving you two of the firewood!!  Why do you need 2 packages of food?' 'I have a very fast metabolism and a dog to take care of. Thanks for the firewood.'
Utterance: 'Awe!  We have a dog as well, I love dogs!!  How about if you get 1 package of food, 1 water and 2 firewood?  Would that be sufficient for you?'

No