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.

Q: Context: 'I can give you 2 units of firewood, but I need at least 1 as well. ' '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'
Utterance: 'I may need two food, I don't know how much fish I can catch.'

A: Yes
****
Q: Context: 'The basics of man -  food and water' 'Ah, okay, I could use some of that too! Which one do you need most?' 'water. How about you?'
Utterance: 'I could use water, too, but I'd be willing to give some up if you give me more items overall'

A: Yes
****
Q: Context: 'It will be nice to get out and explore the great outdoors, even if it is super hot!' 'I agree. What supplies could you use more of?' 'Water for sure, need to stay extra hydrated.  How about you?'
Utterance: 'Haha yup I had a feeling about that one. ;-) Yeah my wife has a bunch of crazy hikes planned so water is a must here too. What else?'

A:
Yes
****