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.

Example Input: Context: 'That is a very generous offer, which I very much appreciate. But I am also worried that I could run out. What if I take 2 foods, give you 2 firewoods, and 1 water?  ' 'Would you be willing to give me 1 food, 2 firewood, and 2 water?' 'I could make that work 🙂 I'm sorry if I came off mean, I'm just trying to make sure I'll be ok. I don't camp often, so I'm not sure how to prepare.'
Utterance: 'I understand. What are you using the extra food for?'
Example Output: Yes

Example Input: Context: 'I am so excited to go camping!  I am planning a nice long walk in the woods to decompress from the hectic days of working.'
Utterance: 'I am too.  I've been thinking of this since COVID.  I hear we have some materials to share between the two of us.  What are you thinking?  For me, I am from the South so I get cold easily 🙂 so firewood is my main priority.'
Example Output: No

Example Input: Context: 'Okay.But I need whole water to survive.' 'Of course. So, what about food? I will definitely need the food. I have a big family, and we all need to eat. I can't have people starving. Can I take all of the food?' 'Okay I accept that.'
Utterance: 'Wonderful. And what about the firewood? I would like 2 firewood, and I can give you 1 firewood. Will you accept that?'
Example Output:
Yes