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: 'Yes, you're very kind. I desperately need some more water and firewood.' 'I'm glad we were able to work out something for both of us! I hope you have a great camping trip!' 'Sorry, just adjusting the numbers to what we agreed above! '
Utterance: 'My mistake, hypothermia is messing with my brain.'
[A]: No


[Q]: Context: 'Hello fellow camper! I am interested to know your preference in items?' 'Hello! Yes I'm excited for the trip. 🙂 My most important is food. How about you?'
Utterance: 'I am excited too. I really need food too. What other item is priority for you?'
[A]: Yes


[Q]: Context: 'I am in dire need of firewood myself. I was planning on bringing food that needed to be cooked over flame. 😮' 'Well maybe we can find a way to split it!  This isn't a problem we can't solve.  Are you in need of food too, then?' 'That would be great! I don't need food as much as I am in need of firewood, to be honest.'
Utterance: 'I brought purification tablets so I can make do with rainwater or river water.  How about you?'
[A]:
Yes