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'm going to be heading out on a big camping trip and will need to take some extra supplies.  Are you going camping as well?'
Utterance: 'I am also going camping! What do you think you're going to need the most of? What are your preferences?'

Answer: Yes


Question: Context: 'I need food because I have mouths to feed and maybe a firewood?' 'Okay . How much You need each?' '3 Food and 1 Firewood? You get the rest?'
Utterance: 'That's fine.I will accept your deal.Tell me the reason why you need the item?'

Answer: Yes


Question: Context: 
Utterance: 'What are your preference what would you need most?'

Answer:
Yes