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 Input:
Context: 'hmmmmm not possible. i need the same exact thing. what about i get 2 foods, 1 firewood and 2 water☹️' 'If you take 2 foods, 1 firewood, and 1 water that's a deal.  Otherwise I need the 2 foods, 1 firewood, and 2 water.  ' 'so let me get the remaining firewood then. making 2 foods, 2 firewood and 1 water🙂. or should i be going'
Utterance: 'You can have 2 firewood OR 2 food.  I prefer you take firewood as I need at least 2 food. Each of us gets 2 of something. '

Ex Output:
No


Ex Input:
Context: 'I can't take cold and would badly need to have more firewood.' 'I need more firewood to keep my food going.' 'I get it, in that case I'' take additional packages of food.'
Utterance: 'I don't think so, because I need additional packages of food in case there is an emergency.'

Ex Output:
Yes


Ex Input:
Context: 'Hey, Nice getting to interact with you. I would need additional packages of food as I'm camping with Family and my kids tend to get hungry often.' 'I also have a family I am camping with several small childern and my wife who is pregnant. I need plenty of firewood and water.' 'I get it, in that case and to be a fair deal. I will have 2 of food, 1 of water and firewood each.'
Utterance: 'That seems fair however I would like to have plenty of food also. I think it would be fair to have 2 firewood, 1 food and 2 water '

Ex Output:

Yes