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: 
Utterance: 'hy thats my offer'
No

Context: 'I will need 2 firewood, 2 water and 1 food'
Utterance: 'How about you take all the firewood because I have the skills necessary to chop down more. I also will need three packages of food because I will be climbing a very tall mountain.'
Yes

Context: 'What are your preference what would you need most?'
Utterance: 'I need to keep the fire burning so i need firewood most. What about you?'

Yes