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: 
Utterance: 'How are you today? Did you have any preferences on the supplies we will be trading?'

Answer: Yes


Question: Context: 'With little firewood, I need the food since I can't cook fish.  How about you get 2 firewood, one food, and 1 water?' 'how about i get 2food because it is very important to my health' 'Okay, how about you get 2 firewood, 2 food, and I get 1 firewood and 1 food and all the water?'
Utterance: '☹️ no i also need water,i get dehydrated easily'

Answer: No


Question: Context: 'No I can't do that unfortunately./' 'Ok, so I could take 2 firewood, 1 food, and 1 water, the original deal, do you still want to do that one?' 'I would prefer the original deal'
Utterance: 'Ok, I am good with the original deal also. '

Answer:
No