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 elicit-pref strategy, otherwise output No. elicit-pref is a cooperative negotiation strategy. It is used to discover the preference order of the opponent in the negotiation.
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Question: Context: 'Which supplies do you need?' 'Well, I really need water in case we get really thirsty from hiking. I also need firewood in case it gets colder and we need more. It would be cool to have more food added for dessert like s'mores, but it's not really necessary.' 'How about you take all the water and one of the firewoods, and I can have all the food and 2 of the firewoods'
Utterance: 'Let me think about it. What supplies do you need?'

Answer: Yes


Question: Context: 'Oh no! I hope you are okay! ' 'Yeah, I'm okay now.  It's just that I need to have a lot of food around to be able to manage it properly.  Like on this camping trip.' 'I totally understand! I am in need of food too, but it sounds like you really need it so I am hapy to give you all of the food if I can have all of the firewood?'
Utterance: 'What is your need for water?  I could use some of that, too.'

Answer: Yes


Question: Context: 'hello'
Utterance: 'Hello, what would you like for the packages?'

Answer:
Yes