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: 'I have the same needs. I have a low metabolism, so I need food and firewood to keep me warm and energized. Water I plan on filtering elsewhere.' 'Ok, well, I'd like to help. How about if I take 2 food and 1 firewood and 2 water, and you can keep the rest?' 'Would you mind if you got 3 food and 1 water and I got 3 firewood and 2 water?'
Utterance: 'I'd like some firewood though... Would 3 food and 1 firewood for me work?'
[EX A]: No

[EX Q]: Context: 'Sounds good.🙂' 'I think this would be a good even split of resources and would allow each of us to have extra supplies. 🙂' 'I agree with you.'
Utterance: 'All that is left is to submit our deal. Nice working with you!'
[EX A]: No

[EX Q]: Context: 'Hi!  The weather is going to be a lot colder than I anticipated, so I need extra firewood.  Would you be willing to give some to me?' 'Sure, but I need 2 packs of firewood and 2 packs of food and water' 'That doesn't really sound fair to me ☹️'
Utterance: 'How much food do you need?'
[EX A]:
Yes