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.

Context: 'hello, so what is your most important thing that you want? ' 'my priority is firewood. What's yours?' 'me and my gals thing that firewood is important also but we actually want water'
Utterance: 'We can figure something out. Would you rather have 3 water and 0 firewood or 2 water and 1 firewood?'
No

Context: 'Can i kindly know your preferences please?' 'Well, I'm kind of low on water, so I'd like to get as much of that as I can. I'd like to go hiking and I don't really have enough water for a long trip. What about you?' 'Ohh nice.I also have the same issue around here.The thirst for water is growing high than ever due to drought'
Utterance: 'Well, that's a bummer. How are you set for food? While I wouldn't mind a bit more, I'm in pretty good shape there, so I'd be willing to trade it for water. I'd hate to leave without getting a good hike in.'
Yes

Context: 'Interesting - you're essentially saying that you need the majority of two of the three items. Hmm...' 'Yes, thats all. I need 1/3 food, 2/3 water, and 2/3 firewood.' 'Still not convinced in any way that you need more items in total over me. Please clarify!'
Utterance: 'Food is what I prioritize much more than the others. If you want the majority of the others, I will need all the food.'

No