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: 'Awesome! That does sound like a deal. I wish we had more firewood to split because I am afraid it might get cold.' 'I agree. I am feeling generous and I did buy a new axe for this camping trip. So, I could stick to the prior agreement and just work a little harder to find some dry trees to chop.' 'I appreciate your generosity 🙂 I think that bringing your axe would be a great idea! Also be sure to pack warm clothes and extra blankets! I'm sure we will both be fine'
Utterance: 'You are welcome! 🙂 I am happy that we reached an agreement! Did you happen to see any dry looking trees on along your way?'
[A]: No

[Q]: Context:
Utterance: 'Hi there. Hope you too are looking forward to this much needed camping trip. What are your needs in terms of extra packages?'
[A]: Yes

[Q]: Context: 'Would it be possible to get an extra water also? How do you feel about the firewood? I wish we could split everything evenly.🙂' 'Me too. Firewood is the most important thing to me. We will be somewhere cold and we could use the extra warmth.' 'True. How about I get 2 food, 2 water and 1 firewood. And that will leave you with 2 firewood, 1 water, and 1 food? '
Utterance: 'What do you need the extra water for?'
[A]:
Yes