TASK DEFINITION: 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.
PROBLEM: 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.'

SOLUTION: No

PROBLEM: Context: 'ok, if i get all 3 extra firewood, I'd be fine with getting 1 extra water while you get 2? food is a really low priority for me' 'Same here as well as I have carried enough but yes, I need firewood as most of y food requires cooking and specially my kids prefer having food hot.' 'Ok thats fair, I would prefer to have more firewood since I'm awful at collecting firewood while out. But we could be a more even split of it all. 2/1 for both. Do you need more water or more firewood?'
Utterance: 'I need more firewood, I can maage with 1 additional package of water.'

SOLUTION: No

PROBLEM: Context: 'Ah, I see. I have plenty of firewood as well but mostly need food and some water.' 'so let me suggest a split, I get two water and two food, you get one food, one water and three firewood' 'I really don't need that much firewood. How about You get two water, one food and one firewood. And I'll take two food, one water and two firewood.'
Utterance: 'not bad, but do you mind giving me two wood then? '

SOLUTION:
No