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: 'We only have 3 of each to divide up.. so yes, you're going to have to give me one more on an item.. but in exchange I'm giving you 1 more on two different items.  I'm getting 4 items in total, you're getting 5.. - You're essentially netting 11% more 'items' than I am in this deal. ' 'thats the point as you need water so badly' 'Correct.. I do.. but if you're not willing to budge on this where you're still netting more overall value I understand - I'm bummed but I understand.'
Utterance: 'im contented with  what i have but im willing to trade as yu need more water so i need t make a profit'
[A]: No


[Q]: Context: 
Utterance: 'What are your preferences for water?'
[A]: Yes


[Q]: Context: 'So could I. How about we split the firewood?' 'How about I take 2 firewood but you can have 2 waters? Water is pretty important and I have a little extra.' 'That sounds fair.'
Utterance: 'How are you on food? '
[A]:
Yes


