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: 'I am great, i am really excited about camping how about you?' 'Same here! Its my family's first time out together and we are at the camping already.' 'Nice, are there any extra supplies that you will really need?'
Utterance: 'At the camping site. Yes, I would like some water and food to refill the used packs'

SOLUTION: Yes

PROBLEM: Context: 'I really need the firewood,  It gets very very cold at night where I go camping.' 'I really needed firewood also.  I have brought my whole family camping which includes my 2 and 3 year old.  They really need to stay warm' 'I am just going to walk away,  I can't have my family freeze'
Utterance: 'I do not want my family to freeze either but walking away doesn't benefit either of us. How about I take the water and 2 firewoods, you have the rest'

SOLUTION: Yes

PROBLEM: Context: 'How much firewood do you need?' 'i need two food items and one water' 'I will take 2 waters, however I would like 2 food and you can have 1 food and 3 firewoods'
Utterance: 'one food is not enough i am pregnant and i need to eat many meals'

SOLUTION:
Yes