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: '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.  '
[EX A]: No

[EX Q]: Context: 'Water is my second priority item. I am sure we can work out a fair deal. What do you propose?' 'We'll be able to make it close to equal. Let's do 2 foods for one of us, 2 waters and 2 firewood for the other person. I'll take either.' 'Ok that works for me 🙂 2 food for me, 2 firewood and 1 water. Then you get 2 water and 1 food and 1 firewood. Does that work?'
Utterance: 'No close. 2 food 1 water 1 firewood for one of us. The other gets 1 food 2 water 2 firewood. Food is your number one correct?'
[EX A]: Yes

[EX Q]: Context: 'how about I give you 2 waters and 1 food package in exchange for all your firewood?' 'I'm afraid that will not work for me. I have hypothyroidism, so I am intolerant to cold temperatures. I was also planning on taking a swim in the river. I would prefer to take two firewood & one food package, & you may have the three waters, two food packages, & one firewood.' 'I'm afraid I also have need of the firewood. I have anaemia so i get cold easily so I need to make sure I have adequate firewood or i may freeze at night. I also have a thin clothing so they wont provide adequate warmth. How about all of my water and 2 food for all of the firewood?'
Utterance: 'Seeing as we both have a medical-necessity for the firewood, it's rather unfair that either one of us take ALL of the firewood. I felt that I was being rather generous with my previous offer.'
[EX A]:
No