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: 'Yes, and I'll get 1 package of food and all of the firewood.' 'Okay I think this might be a good deal. ' 'Actually, I've just thought about it and I'd also like one package of water. I think it'd be fair being that you're getting 2 packages of food.'
Utterance: 'Which means? Did you mean that I would take 2 packages of food and 2 packages of water? Then I will ask for one package of fire wood.'

Ex Output:
No


Ex Input:
Context: 'Hello'
Utterance: 'hello, so what is your most important thing that you want? '

Ex Output:
No


Ex Input:
Context: 'Great, this is going to be a fun trip. So I get 2 water, 2 food and you get 1 water, 1 food and 3 firewood?' 'Yes, I cant wait to set off. It sounds like you have it all correct. I hope we both have a great trip. ' 'I hope it doesn't get cold out since I won't have any firewood. You need it more than I do though, so you should have it all.'
Utterance: 'Thank you. I hope I don't run out of water. I get dehydrated easily but I want us both to be comfortable. '

Ex Output:

Yes