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: 'You are being very kind then, im elderly so trying to make fresh water by boiling it from getting it from a river was concerning to me. How about you take all three of the food for your kiddo's' 'That sounds fair. The kids can bathe in the stream. We are good with 2 food packs.' 'Lol, wish i could. Then you take all 3 of the firewood, I'll take 2 of the Water and 1 of the food, sound good?'
Utterance: 'Just to be clear, I get 3 firewoods, 1 water and 1 food. You get 0 firewood, 2 waters and 2 food packs?'
No

Context: 'Hello there, I'm in a lot of need for some firewood! I'd not be against taking most of it if that's alright?' 'Hi, I need the all food package. I will frequently feel hungry'
Utterance: 'I can give you two of the packages if you're willing to give me all 3 of the firewood. I left mine out in the rain a couple of nights ago so its all ruined.'
Yes

Context: 'Sure that sounds fair. Thank you. Besides water what do you need for your trip?' 'great. Then can you give 2 food instead? We eat a lot and need more to go through the night...' 'Ok I understand. Since you're willing to give me 2 water I can give you 2 food. Would it be ok then if I ask for 2 firewood? The kids were talking about making s-mores'
Utterance: 'I can give you one firewood. I need more to boil the water from the river since you will get more water. How about that?'

Yes