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: 'Haha I suck at those activities as well. I don't usually don't eat a lot, so I'm happy to exchange some food supplies for water supplies. ' 'I would be willing to do that. What do you propose?' 'I get 2 water, 1 food and 1 firewood, you get 1 water, 2 food and 2 firewood. '
Utterance: 'You know what that sounds extremely fair. I would accept that offer'
No

Context: 
Utterance: '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?'
Yes

Context: 'Firewood and my second priority is water.  I'm open to negotiating though.' 'Glad to hear because I really need firewood and food. What do you propose?' 'I can give you 3 packages of food but I really need the additional firewood.'
Utterance: 'I like that. How about 3 water for you and 1 firewood?'

No