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: 'Hi, I really need water to stay hydrated during my camping trip because my food supplies are low. Do you have any to spare?' 'Hi.  I can't do that right now.' 'Is there anything that you might need? '
Utterance: 'I would be interested in firewood.  Can I ask you, what are your primary concerns on this trip?'
[EX A]: Yes

[EX Q]: Context: 'I would really like 3 food, 1 water, and 1 firewood if possible. Would you agree to that instead?' 'If you were me would you be happy with 0 Foods, 2 waters, and 2 Firewoods? when water is your priority? maybe we can make it even, your highest priority is Food and mine is water? you can have all firewood? I will be shorten out on everything except the water and youll get 3 foods and 3 firewoods, while i only get 3 waters?' 'Ok, I will agree to me getting 3 food and 3 firewood. Thank you for discussing this with me! 🙂'
Utterance: 'yay! submitting deal!'
[EX A]: No

[EX Q]: Context: 'Looking forward to the trip.  They gave up the bare essentials but I could really use some extra supplies.🙂' 'I could too, I am a little short on a few things!' 'My biggest concern is water.  I could really use more.  That and some extra food.'
Utterance: 'My biggest concern is food and then water. '
[EX A]:
No