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: 'I can give 3 packages of food and 1 water.  ' 'So 1 firewood, 0 food and 3 water for you?' 'No 3 packages of firewood, 1 package of water, and I can give you 3 packages of food.  I need the Firewood the most.'
Utterance: 'Tell me why you need so much firewood?'

Answer: Yes


Question: Context: 
Utterance: 'Hi there, good to connect with you. How are you today?'

Answer: No


Question: Context: 'We likely need a lot of firewood and some water to put out the fire when we are done lol. What are you thinking?' 'Yea, I'm not too into firewood because it will be quite hot when I make my camping trip. I could definitely use some more food just in case of an emergency out there.' 'Then how about I give you all my food in exchange for all the firewood and since I have to put out the fire, maybe 2 water for me and 1 for you?'
Utterance: 'That sounds like a fair deal. I have no problem with that one.'

Answer:
No