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: 'The 2 packages of food and 2 waters. I get thristy a lot too.' 'Ok, well if I can have 3 packages of firewood, 1 water and 1 food, you can have 2 packages of food and 2 waters. Does that sound good?' 'I like that deal. '
Utterance: 'Sounds good.🙂'
[A]: No


[Q]: Context: 'Since it's hot there, I get thirsty and dry real quick. 😡' 'Oh ok, well I plan on bringing some juice, beer and other drinks. So I could spare some extra water. And I am pretty good at fishing, so I won't need much food either' 'How nice of you. I certain we can work something out. 🙂'
Utterance: 'How about I get 3 firewood 0 water 2 food, and you get 0 firewood 3 water 1 food?'
[A]: No


[Q]: Context: 'I'm doing great!  I'm on the first camping trip with my five children.' 'Wow, that's amazing. My parents took me camping when I was young. Now we going hiking every other weekend. What do you plan on doing?' 'That sounds like so much fun!  I hope we get to hike some.  I have my four month old baby with us which is exciting.  I'm worried I didn't bring enough water for his bottles, though.'
Utterance: 'That sucks, you need to be hydrated. What supplies do you require? My family loves to grill, so we do require food.'
[A]:
Yes