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.

[EX Q]: Context: 
Utterance: 'Hi!  I want some additional packages of firewood, water, and food'
[EX A]: No

[EX Q]: Context: 'Food is a second priority for me, as I will be metal-detecting as well, & cannot risk fainting from the heat. How about I give you two firewood (I don't think we can "share", haha), you can give me two food packages, and two water packages.' 'okay, I am willing to give up more food to get the firewood, I like your offer🙂' 'I do as well. I'm glad we could come to an agreement! 🙂'
Utterance: 'yes, I agree to give you two of my food packages, and two water packages and you give me two firewood'
[EX A]: No

[EX Q]: Context: 'Hmm, you're getting my top item there though. That still might work.' 'I think it's pretty fair since we'll both get at least one of our top item (firewood) and you get more food (I assume your second priority) and I get more water (my second priority)' 'Well you're getting more on 2/3.'
Utterance: 'True - but one of us has to 🙂.'
[EX A]:
No