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.

[EX Q]: Context: 'Hello 🙂' 'Hello to you!' 'Food is the most important item for me because the food I brought has spoiled! Which item do you need the most?'
Utterance: 'I need water above all else.'
[EX A]: No

[EX Q]: Context: 'I will offer 3 water to you! You will maybe need more food with that much exercise? How about 2 food? I really need that extra firewood. Remember that the Catskills probably has some extra wood around.' 'That works for me, you can have the firewood then!' 'Alright that sounds great. '
Utterance: 'Great! so, for you, 2 wood, 1 food, me 3 water 2 food'
[EX A]: No

[EX Q]: Context: 'How much food do you need?' 'If you give me 1 unit each of water and firewood, I'll give you 2 units of food for helping me out' 'I may need two food, I don't know how much fish I can catch.'
Utterance: 'I can give you 2 of everything, but I want and need at least one of everything so my dog and I can be ok during the winter trip'
[EX A]:
Yes