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.
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Question: Context: 'That sounds like a blast.   I would like to propose that you take 2 waters and 1 firewood and I'll take 2 firewoods and 1 water for our respective trips.  Does that work for you?' 'Yes, we are all looking forward to it. Thanks for being amenable and trying to make this work. That might be okay, but could we take take the 3 packages of food? Since we won't be doing as big of a bonfire, I am sure we'll hike more or swim and need the extra energy' 'I was hoping to take at least some of the food with me.  As you know, those teenagers seem to hungry ALL the time.  It's like feeding fuel into a bottomless pit.  So I'm definitely going to need some of the food for my trip as well.'
Utterance: 'Hm okay. Would 1 packet of food be sufficient? I know they are growing but my friends are ex football players and can eat 3x the normal person'

Answer: No


Question: Context: 'Hi, I'm hoping we can come to a nice deal. 🙂 I'm most interested in firewood, because it always helps to have extra if your fire goes out.'
Utterance: 'That makes sense. I'm also interested in firewood, but have a great need for water due to the current weather. '

Answer: Yes


Question: Context: 'Okay that works for me as well.' 'awesome any chance I could persuade you to substitute your 1 food item for an additional fire wood 🙂' 'No I cannot do that unfortunately. We brought just enough food for our weekend trip, and I cannot lose any or we will run out before our camping trip is over.'
Utterance: 'OK, just thought I'd ask, so are we settled on you getting 1 Food, 1 firewood and 3 waters?'

Answer:
No