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.
--------
Question: Context: 'Hi, how is your trip going? hopefully better than mine'
Utterance: 'My trip is going pretty so so too  im sorry to hear that about yours!! sounds like we both are gonna need some extra stuff? I was wondering if we could start with the water? any chance i could have it all and you can have all of something else? thoughts? im open to discussion'

Answer: No


Question: Context: 'I need food and firewood' 'I need water and then firewood' 'You can have all the water if I can have all the extra food'
Utterance: 'OK, but first tell me why you need extra food'

Answer: Yes


Question: Context: 
Utterance: 'Hello.  I hope you are well.  I would like to have all of the water, 2 of the firewood and 1 of the food.  '

Answer:
No