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. Why do you need so many food packages?' 'Well, I have two teenage boys who will be with me.  In normal circumstances they go through a lot of food.  While camping, hiking and kayaking I know we will need plenty to keep their energy level high to do everything.🙂' 'Well I will definitely need 2 packages of food and 2 of firewood for survival.'
Utterance: 'I am definitely ok with giving you two of the firewood!!  Why do you need 2 packages of food?'
[A]: Yes


[Q]: Context: 'So I get only 3 packages? 2 food and 1 firewood? ' 'Do you need more firewood?  I could compromise there.' 'How about I get 2 food and 2 firewood? You can get all the water plus 1 food and 1 firewood? '
Utterance: 'Yes that sounds fair.  Deal.  '
[A]: No


[Q]: Context: 'Hello.  What are your preferences for extra items for your camping trip?' 'hello'
Utterance: 'Do you have a preference for any extra items for your camping trip?'
[A]:
Yes