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: '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.'

SOLUTION: Yes

PROBLEM: Context: 'Nice, I am too. I'm actually looking to gather up some extra supplies, what about you?' 'I need extra supplies as well. I'll be camping at a higher elevation and need extra firewood for warmth, extra food and some water. What do you need?' 'I was really looking for extra food, firewood is important to me but I could spare some in exchange. I normally eat more than the average person so I'm worried my food supplies as is will make it hard to get through the trip.'
Utterance: 'I would like a little extra food for myself as well. Would you be willing to split the food 1 for me and 2 for you? '

SOLUTION: No

PROBLEM: Context: 'Hello, I'm excited for our camping trip!' 'Hey buddy, yes I'm so pumped for it.'
Utterance: 'Okay so I'm planning this super cool backpacking expedition up the waterfall but I'm going to need all the additional water and food for everyone.'

SOLUTION:
Yes