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: 'Hello I need a lot of water to survive' 'I have a lot of water around me I can use. So I can give you a lot of extra.' 'Ok nice I will give you 3 food if you give me 3 water'
Utterance: 'OK, that works for me. But I would like a lot of firewood. I like to hunt and cook what I kill.'

Answer: No


Question: Context: 'Yes, food is my highest. It's necessary for my friend to keep extra around just in case he crashes. Why is water your highest priority?' 'I need the water to drink - I don't trust the water I might find at the campsite.' 'Did you bring any water to start?'
Utterance: 'Yes! Did you bring any food to start?'

Answer: No


Question: Context: 'Hi, this is my first time camping and I want to make sure I have enough stuff.  I would like three food, three firewood, and two water.  What do you think?' 'I have been camping a few times and pretty much know what I need to be comfortable and healthy.  Warmth and hydration are important for me.  So, I am thinking 2 firewood, 2 water and 0 food.'
Utterance: 'Since I have never been camping before, why do you think you need 2 firewood?'

Answer:
Yes