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: 'But I agreed to give you all the food. Now that you want two waters, I think I should have some food because I left a bag of my food at home. You get two waters and I get one of the food. Then you get the majority of both the water and food.' 'So I get 2 waters/2 food/0 firewood, and you get 1 water/1 food/3 firewood? I think that works for me.' 'Yes, that's the plan. By the way, what do you need all that food for? You didn't say. I'm just curious.'
Utterance: 'I'm a bigger guy (6'3") so I eat a lot, especially after activities like hiking and kayaking. Same reason I want water really.'

SOLUTION: Yes

PROBLEM: Context: 'I think the fairest thing would be that you keep 1 water, 2 food, 2 firewood' 'How about I take 2 water, 2 firewood, and 2 food, and then you take the rest' 'Let's stay like this, 2 of water, 1 of food, 1 of firewood and you take the rest'
Utterance: 'I really need the water more than the rest of that stuff. I'll take 2 waters, 1 food, and 1 firewood. '

SOLUTION: Yes

PROBLEM: Context: 'Hello I'm really hungry and thirsty and want some food and water if that's ok with you. '
Utterance: 'Well some is okay but not all. The thing is that we left in a hurry and forgot to pick up the bag with the extra food items. I am sorry but we have kids with us so we will need the food. Am sure you understand ☹️'

SOLUTION:
Yes