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: 'Great! I'll be going to the Catskills, in NY. Where are you planning on going?' 'Antarctica! I am going to need as much firewood as I can get.' 'Ha, woah that's exotic! I'll need some firewood as well, but maybe not as much as you! I'm planning on going hiking a lot, and will need some extra water, as, again, ill be hiking a lot'
Utterance: 'I will offer 3 water to you! You will maybe need more food with that much exercise? How about 2 food? I really need that extra firewood. Remember that the Catskills probably has some extra wood around.'
No

Context: 'not soo good, i am hungry' 'Uh oh. What are you preferences on supplies?' 'food, then water, then firewood, and yours?'
Utterance: 'water, food then firewood. It's really hot so I need to make sure we are hydrated. We forgot a bag of supplies that had mostly food so we really could use food. It's hot so firewood isn't necessary. If anything we can get it from around or on a hike.'
Yes

Context: 'Hi, What is decision about packages?' 'I was thinking I will take 2 food, 1 water, 2 firewood'
Utterance: 'I would like to share 1 food, 1 water and 2 firewood with you. Can you accept the deal?'

No