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: 'ME as well! we are a group of big eaters, and are looking to take lots of food.' 'That is fair as there is no showers or sinks at my campsite so I am looking to take water :) ' 'We will likely also need to take water too. Need to be able to wash up.'
Utterance: 'That is fair, I also will need a good bit of firewood to keep warm as the campsite is in a colder area.'

SOLUTION: Yes

PROBLEM: Context: 'I don't have any problems letting you have all 3 waters. Would you be willing to give me all 3 firewood? I need extra to keep me warm as I get cold easily.' 'That's a little tough for me but if we can come to an agreement where I get 2 of the food, I'd be willing to play ball.  We both deserve a good camping trip, after all.' 'That's true. We both deserve a good trip. Why do you need more food?'
Utterance: 'Because I planned to go hiking and it wouldn't leave me time to chop much of any myself.  Even if I did, I'd have to carry it back and that's obviously not very smart in this heat.  But if I had the extra food, I'd be willing to inconvenience myself with getting firewood and cutting my hike a little short because I know the firewood is important to you.'

SOLUTION: Yes

PROBLEM: Context: 'How many of each extra package are you thinking you need?' 'I would prefer to take all of the firewood, split the food, and you could have all of the water.  What do you need the most?'
Utterance: 'Splitting the food is what I was thinking as well, but I'd also like to split the firewood. We can split the water or I'm fine taking all of that.'

SOLUTION:
No