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: 'Perfect!  I'm a northerner, so the firewood is all yours!  I'll need lot's of water to keep hydrated after the hike, and I'll probably be pretty hungry too.' 'My spouse calls me a water buffalo so I'm pretty water dependent if you couldn't tell.  ' 'That's good.  Best way to stay healthy is with water.  How about you take 1 water and all the firewood?'
Utterance: 'I need at least one ration of food.  Would it be ok with me:  3 firewood and 1 each of food and water.  If you are ok with that, I am too.'

Ex Output:
No


Ex Input:
Context: 'I am running low on firewood. I need more to keep the fire going and cook food. '
Utterance: 'Yeah I need firewood too. It's only 50 degrees at night on the mountain, even in the summer.'

Ex Output:
Yes


Ex Input:
Context: 'I have a bunch of kids and need extra water. I can give you 2 food packs instead.' 'Then i understand, i have kidney issues but i would rather go without then take away from a family' 'If you need water for a medical issue the of course you can have two waters.'
Utterance: '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'

Ex Output:

No