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.

Q: Context: 'Hi fellow camper! What are your needs for the extra provisions.' 'Hi i'm really excited for camping. I am looking for food and water ' 'Yes, a much needed getaway. Oh my, we need the same provisions! How would you be with receiving two waters, one food package, and two of the firewood?'
Utterance: 'I think I would be able to make that work. What are you looking forward to while camping? '

A: Yes
****
Q: Context: 
Utterance: 'I want to make sure I'm well prepared for camping. How would you feel if I took 2 water, 1 firewood, and 2 food?'

A: No
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Q: Context: 'hello' 'Hey there. How are you?' 'not soo good, i am hungry'
Utterance: 'Uh oh. What are you preferences on supplies?'

A:
Yes
****